WO2019132482A1 - 규칙적인 메조 기공을 가진 제오라이트 입자에 금속이 함침된 탄화수소 흡착제 및 그 제조방법 - Google Patents

규칙적인 메조 기공을 가진 제오라이트 입자에 금속이 함침된 탄화수소 흡착제 및 그 제조방법 Download PDF

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Publication number
WO2019132482A1
WO2019132482A1 PCT/KR2018/016590 KR2018016590W WO2019132482A1 WO 2019132482 A1 WO2019132482 A1 WO 2019132482A1 KR 2018016590 W KR2018016590 W KR 2018016590W WO 2019132482 A1 WO2019132482 A1 WO 2019132482A1
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WO
WIPO (PCT)
Prior art keywords
particles
impregnated
zeolite
metal
hydrocarbon adsorbent
Prior art date
Application number
PCT/KR2018/016590
Other languages
English (en)
French (fr)
Inventor
최정규
이관영
장은희
김창환
강천용
Original Assignee
현대자동차주식회사
고려대학교 산학협력단
기아자동차주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대자동차주식회사, 고려대학교 산학협력단, 기아자동차주식회사 filed Critical 현대자동차주식회사
Priority to JP2020535532A priority Critical patent/JP7217278B2/ja
Priority to EP18893856.7A priority patent/EP3733280A4/en
Priority to CN201880084499.5A priority patent/CN111542388A/zh
Priority to US16/957,927 priority patent/US20210370219A1/en
Priority to CN201880084462.2A priority patent/CN111526941A/zh
Priority to EP18895622.1A priority patent/EP3733281A4/en
Priority to JP2020536557A priority patent/JP2021509087A/ja
Priority to PCT/KR2018/016906 priority patent/WO2019132612A1/ko
Priority to CN201880084423.2A priority patent/CN111655367A/zh
Priority to JP2020535596A priority patent/JP2021509086A/ja
Priority to PCT/KR2018/016905 priority patent/WO2019132611A1/ko
Priority to EP18896734.3A priority patent/EP3733282A4/en
Publication of WO2019132482A1 publication Critical patent/WO2019132482A1/ko
Priority to US16/913,671 priority patent/US20200391178A1/en
Priority to US18/163,914 priority patent/US20230191362A1/en

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Definitions

  • the present invention relates to a hydrocarbon adsorbent and metal-impregnated zeolite particles having regular mesopores, and more particularly, to a method for producing zeolite particles having a mesoporous zeolite particle,
  • the present invention relates to a hydrocarbon adsorbent in which metal cations and metal oxides are impregnated into zeolite particles regularly formed with mesopores regularly regulating mesopores, and a method of adsorbing hydrocarbons using the hydrocarbon adsorbents.
  • hydrocarbon adsorbent is a device that desorbs HC when it reaches 200-300T, where the three-way catalyst is active, by adsorbing HC released during the low-temperature start-up period.
  • zeolite A lot of zeolite is being studied. The performance of the hydrocarbon adsorbent is tested by measuring adsorption / desorption of propene and toluene, which are representative HC emission materials. Zeolite structure, Si / Al ratio, and the performance of hydrocarbon adsorbents with or without metal impregnation. HC is the zeolite content (SiMl ratio) of Al The higher adsorption amount was, the higher the adsorption amount was. Among the various zeolite structures, ZSM-5 and beta-zeolite exhibited the highest performance. However, since the performance of the hydrocarbon adsorbent deteriorates when a large amount of water ( ⁇ 10 vol%) is present, many studies are being conducted to solve such problems.
  • Cu-ZSM-5 particles which have undergone copper ion exchange with ZSM-5 particles introduced meso-pores through dealuminate (des i 1 cation), show high HC trap performance .
  • GC Koltsaki et al. Prog. Energy Combust. Sci. 23, 1-39, 1997.
  • ZSM-5 particles with mesopores introduced through dealuminate and des i 1 cat ion have irregular mesopores and can not control Si / Al ratio and mesoporosity.
  • the present inventors have made extensive efforts to develop a hydrocarbon adsorbent having a regular mesopore, and can control Si / Al ratio and mesoporosity.
  • zeolite particles having controlled mesoporosity by wetting zeolite particles having controlled mesoporosity by changing the content of ethanol and water
  • the hydrocarbon adsorbent having the metal cation and the metal oxide impregnated by the impregnation method is increased in the adsorption power of the hydrocarbon in the low temperature starting section and is oxidized rapidly once the hydrocarbon is desorbed.
  • the present invention provides a hydrocarbon adsorbent capable of controlling the mesopore porosity.
  • the present invention provides a hydrocarbon adsorbent characterized in that zeolite particles regularly formed with mesopores of 2-10 nm size are impregnated with metal cations and metal oxides.
  • the invention also relates to a process for the production of mesopores
  • the zeolite particles are added to a metal-containing solution to impregnate zeolite particles with metal cations and metal oxides.
  • the present invention also provides a method for adsorbing hydrocarbons using the hydrocarbon adsorbent.
  • the hydrocarbon adsorbent according to the present invention has regular mesopores and can adjust the Si / Al ratio and mesoporosity so that the adsorption power of the hydrocarbon increases in the low-temperature start-up period and can be oxidized rapidly when the hydrocarbon is desorbed. And emission of exhaust gas generated in the industry can be reduced.
  • Figure 1 is a schematic view of an SPP zeolite embedded with Cu according to one embodiment of the present invention.
  • SEM 2 is a scanning electron microscope (SEM) image of SPP particles according to the amount of ethanol and deionized water in the SPP particle synthesis precursor solution of the present invention.
  • TEM 3 is a transmission electron microscope (TEM) image of SPP particles according to the amount of ethanol and deionized water in the SPP particle synthesis precursor solution of the present invention.
  • FIG. 4 shows X-ray diffraction (XRD) patterns of SPP particles according to the amount of ethanol and deionized water in the SPP particle synthesis precursor solution of the present invention.
  • Figure 5 shows the N 2 physical adsorption isotherm and pore size of Na-type SPP particles of the present invention 2019/132482 1 »(: 1 ⁇ ⁇ 2018/016590 Observation of distribution.
  • SEM scanning electron microscope
  • TEM 7 is a low magnification transmission electron microscopy (TEM) image of the H-type SPP particles and Cu-impregnated SPP particles of the present invention (white arrows indicate CuO with a size of 5 nm and black arrows indicate CuO with a size of 20).
  • TEM transmission electron microscopy
  • Figure 8 is a high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) image of a Cu-impregnated SPP particle of the present invention and an element mapping of Cu and Al ) It is a constant.
  • FIG. 9 is a graph comparing the scanning electron microscope / energy dispersion of the Cu-impregnated SPP particles of the present invention
  • FIG. 10 is a graph showing X-ray diffraction (XRD) patterns of H-type SPP particles and Cu-impregnated SPP particles of the present invention.
  • FIG. 11 is a graph showing N 2 physical adsorption isotherms and pore size distributions of H-type SPP particles and Cu-impregnated SPP particles of the present invention.
  • CST cold-start tests
  • Figure 13 shows the H-type SPP particles of the present invention and the byproducts produced from the Cu-impregnated SPP particles during the hydrocarbon sorbent (HC trap) test using a mass analyzer
  • FIG. 14 shows the results of measurement of the coke formation of the H-type SPP particles and the Cu-impregnated SPP particles of the present invention by a thermogravimetric analyzer (TGA).
  • Fig. 15 shows the result of performing the cold-start tests (CST) of the Cu-impregnated SPP particles subjected to the continuous test and hot-water treatment of the present invention.
  • Fig. 16 is a mass spectrum (MS) measured by a mass spectrometer of byproducts produced from Cu-impregnated SPP particles in a continuous low temperature startup test.
  • FIG. 17 shows the result of measurement of coke formation of the impregnated 5 ?? particles after a cold start test by a thermogravimetric analyzer.
  • FIG. 19 shows X-ray diffraction patterns of impregnated 5? Particles and 0 ? -Cristobalite treated by hydrothermal treatment.
  • the present invention has regular mesopores
  • the present invention relates to a hydrocarbon adsorbent characterized in that zeolite particles regularly formed with mesopores of 2 10 < 11 > size are impregnated with metal cations and metal oxides.
  • the metal cation acts to improve the adsorption of hydrocarbons, and the metal oxide plays a role in hydrocarbon oxidation, so that the adsorption and oxidation performance can be improved.
  • the mesoporosity (mesopore) of the zeolite is in the range of 0.01 to 3 (p 3 / ⁇ ), the molar ratio of zeolite is 10 to 200, and the metal cation has a maximum weight which can be impregnated into zeolite And the metal oxide is present in an amount of from 3 to 85%, and the metal oxide is present in an amount of from 15 to 97% with respect to a maximum weight which can be impregnated into the zeolite.
  • the volume of the mesopore is 0.1 3 / ⁇ and 1 mole ratio of zeolite is 20 80
  • the metal cation is present in an amount of 25 40% with respect to the maximum weight which can be impregnated into the zeolite, and said metal oxide is 65 To 75% by weight of the composition.
  • the metal cationic silver oxide 0, 0, 11,,, IV, (1), 6 (11) , 6 (111) , 0 0 (1), 0 0 (1 0, 1 (1), 11) , ((1) or (11).
  • the metal oxide may be at 0, 0, 0 , 1, 2, It may be characterized in that the oxide of a metal selected from the group consisting of, preferably, can be characterized in that the ⁇ , 3 ⁇ 40 4, 3 ⁇ 40 3, 00 3 0 4, 000, 0, 0 1120, 011 2 0 3 or () .
  • the surface morphology of the particles according to the molar composition of ethanol and water was observed. As a result, it was confirmed that the structure of the meshes differs according to the removal of ethanol and water.
  • a hydrocarbon reinforcement agent characterized by adding zeolite particles regularly formed with mesopores of 2-10 size to a metal-containing solution to impregnate zeolite particles with metal cations and metal oxides.
  • the metal cation (II), (II), (III), (VI), (VI), (VI), to 6 111, 0 0 (1), the cation of 0 0 11 (1), 11, (1 or 0 1 11 can be characterized.
  • the metal oxide is selected from the group consisting of,,, It can be characterized that it is an oxide of a metal, preferably FeO, Fe 304 Fe 203 , CO 3 O 4, CoO, NiO, C 12 O, C 12 O 3 or CuO. have.
  • the mesoporosity changes depending on the content of ethanol and water.
  • the molar ratio of Si: Al is 5 to 500, preferably 20 to 50.
  • the present invention relates to a method of adsorbing a hydrocarbon characterized by using the hydrocarbon adsorbent.
  • the hydrocarbon may be selected from the group consisting of propene, toluene, ethane, ethene, propane, benzene, xylenes, ethylene, 2-methylbutane, formaldehyde, styrene, acetaldehyde , But is not limited thereto.
  • hydrocarbons include both volatile organic compounds (Vo at and Organic Compounds) generated in manufacturing and storage processes of petrochemical refining coating paints, automobile exhaust gases, building materials such as paints and adhesives, and storage tanks of gas stations can do.
  • the SPP zeolite not impregnated with copper did not adsorb propene, and toluene adsorbed most of the adsorbed adsorbed at about 140 ° C for up to 6 minutes.
  • the amount of propene adsorption increased sharply, and it was desorbed after adsorption at about 90 ° C for 5 minutes to discharge a part.
  • the unreacted propene and toluene were oxidized by CuO and converted to carbon dioxide and carbon monoxide.
  • the propene and toluene adsorption power of zeolite increases with increasing surface area and acidity.
  • propene and steam are simultaneously adsorbed to H-type ZSM-5 zeolite, the propene and steam compete for adsorption sites.
  • Propene is chemically strongly adsorbed on Cu-ZSM-5, resulting in a significant increase in chemisorption compared to H-ZSM-5 (M.
  • the hydrothermal stability test of Cu-impregnated SPP zeolite (Cu-impregnated SPP) was conducted. As a result, it was confirmed that most of the hydrothermally treated Cu-impregnated SPP was converted into a different structure. Thus, it can be seen that adsorption of propene and toluene does not occur at all.
  • SPP particle synthesis precursor solution was prepared.
  • Tetrabutylphosphonium hydroxide (TBPOH, 40%, Alfa Aesar) was added dropwise to the mixture.
  • the precursor solution is referred to as Compound A.
  • Sodium hydroxide NaOH, 98%, Sigma-Aldrich
  • NaOH NaOH
  • the final synthetic precursor solution was then sealed in a polypropylene bottle and further hydrolyzed at least overnight.
  • the synthetic precursor solution after the hydrolysis step of Example 1 was transferred to a cap-free 45 mL teflon liner (Teflon-1 iner) and stirred at room temperature with a constant amount of ethanol and water was evaporated.
  • the molar composition after removal of ethanol with the above-mentioned molar composition was 1 Si02 : x A1 203: 0.3 TBP0H: 10: 0: 2 x NaOH: 0 EtOH and the molar composition after removing half of the amount of ethanol and water was 1 Si0 2: x A1 203: 0.3 TBPOH: 5: 0: 2 x NaOH: 0 EtOH.
  • the resulting solid product was centrifuged, decanted and washed with deionized water five times
  • the 100_ _ ⁇ 1.0 particles have a size of 400-600 1 ( TM) and show a soft, rather rough surface ( Figure 2 ( 31)) .
  • Each particle of 100 to separate 1.0 was composed mainly of thinner or sharp nanosheets and the particle size was reduced (FIG. 2 ( 32)). After further removal of water,
  • the shape of the 100_ _ 0.5 samples was similar to that of the 100_ table 0_11.0, and the size of the nanosheets was further reduced (Fig. 2 (C 3)).
  • 30_mia_11.0 has the formation of a step different from one zeolite phase.
  • the XRD patterns of all the samples showed representative peaks corresponding to the MFI structure except for the amorphous 30_E1_W1.0.
  • the crystallinity of the SPP particles was confirmed, some XRD peaks were not observed.
  • the XRD peak corresponding to the (hkl) plane was attenuated but the peak corresponding to the (hOl) or (OkO) plane appeared (Fig. 4). This may be due to the fact that the nanosheets in the SPP are large in the ac-plane, or the sample holder is aligned much in the ac-plane during the measurement.
  • N 2 physical adsorption isotherms were measured at 77K using Mi cromer itics ASAP2020 system.
  • the pore size and volume are based on the BJH (Barrett-Joyner-Halenda) method provided by the manufacturer
  • the mesopores are derived from the decrease in the thickness of the platelike nanosheets and the increase in the spacing between the nanosheets.
  • SPP particles with a high Si / Al ratio showed stronger mesoporous porosity after removal of ethanol and ethanol / water content from the synthesis precursor solution (Fig. 5 (b2) and (b3)). This is because the SPP particles having a lower Si / Al ratio (50 or 30) have thicker or chopped nanosheets.
  • V 2-1C was calculated using the BJH pore size distribution in the range of 2-10 nm.
  • the surface area and the pore volume calculated from the crime physiological adsorption isotherm show that the mesopores increase after removal of ethanol and ethanol / water content
  • Table 1 shows the pore volume of the calcined sample calculated at the 3 ⁇ 4 physical adsorption isotherm at 7 ° C. ( 3 is the modified 1: - ? Using One Night Method
  • n means high, medium, and low mesopore openings in each generated particle, and the number at the end indicates the ratio of ⁇ 1.
  • the resulting particles were designated as Cu / L_100, Cu / H_100 and Cu / M_30.
  • Cu means that copper is impregnated into H-type SPP particles (L_100, H_100 and M_30).
  • Example 7 Physical properties of H-type SPP particles and Cu-impregnated SPP particles
  • the Si / Al ratio of the H-type and Cu-impregnated SPP particles was L_100 and
  • Na + ions Since the Na / Al ratio of the H-type particles has a value close to 0, Na + ions
  • Table 2 shows the mold and (impregnated ( 3 is the grainy data of the sample, and 15 is the copper-impregnated! Measured from the table-shaped mapping of Fig. 9). 3 % data).
  • the analysis was performed to observe the nanospot constituents of the type-wise particles and the impregnated particles.
  • nanosheets of the particles are preserved even after ion exchange with protons.
  • the impregnated sample was (XI crest peaks corresponding to 0 (about 36. and 39 °) 2019/132482 1 >> (: 1 ⁇ ⁇ 2018/016590
  • the size was calculated to be 20 based on the equation (FIG. 10) It can be seen that all 0 particles of size exist on the surface of the surface.
  • the amount of 0 1 () of the 20 size can be estimated simply in the corresponding 0) peak region. Specifically, (: Relative area of XI ⁇ peak of the (002) plane on a 11 0 (: a 11 ⁇ _100, 0 1 _30 _100 and the 0.6, 1 and 0.4. Considering that in the form of impregnated (paper 0, (0 amount (No / 130, (5, size: we can see that many as 11 ⁇ _100 and the order of 0 1/000.
  • Example 9 Analysis of pore structure of 11-type 8-particle and Cu-impregnated particle
  • Table 4 shows the pore structure and titration results of the type and impregnated me particles (° all hexas located on the outer and mesoporous surfaces).
  • the total Lewis acid, total Bubsted acid, and mesopores were measured using 1450 011 -1 (), 1550 Example 1 and 16150 (wavenumber) the concentration of Ted acid was calculated, respectively were shown for convenience, a Lewis acid and a Bronsted acid, respectively neusan ( ⁇ greater and 6 saneo 3 ⁇ 6).
  • the octa acids of the II-type mime particles were mainly located in the mesopore and outer surface areas.
  • the total amount of the acid was 130 (191 01, ) Is the largest, and 100 (45 2019/132482 1 »(: 1 ⁇ ⁇ 2018/016590
  • Example 10 Cryogenic test of 11-shaped particles
  • the cold-start test was carried out in the range of 150 to 250 sieves
  • the sample was carried out by charging it into a quartz tubular reactor (inner diameter 6.9 (TM) and outer diameter 9.6 (TM)). Temperature was controlled using a temperature controller (35 ⁇ greater, the flow rate of the supplied steam was controlled using mass-flow regulator (F ⁇ 1 6 ⁇ , 01 ⁇ 10 0. The temperature was measured using a thermocouple below the quartz frit on which the sample was placed. Steam was produced by pumping a certain amount of water into the heated tubing. After passing through the reactor, the cooling water (1-degree circulated trap ( 31 )) removed the vapor in the (quite) exhaust gas stream. Trap junior exit was analyzed by mass analyzer (:
  • the calcined cubic grains were activated for 30 minutes at 600 ° C for 30 minutes and at a flow rate of 30 n / min. In 100% propene
  • the reactor was heated to 600 [deg.] C at an ascending rate of 50 [deg.] / Min and maintained at 600 [deg.] C for 1 to 30 minutes.
  • the seedling-type 3 (1 100, 000 and 130) delay the release of propene and toluene to the active temperature of 1 3 3 , It does not have the ability to oxidize hydrocarbons .
  • Example 10 In the same manner as in Example 10, the impregnated! 05 performance of 5 particles
  • the impregnated particles exhibited different unique release profiles compared to the 11-form particles (FIG. 12 (1 31 ), ratio 2) and 0 3)).
  • 0 1 The impregnated particles were able to adsorb propene at an initial temperature of 70 and & lt ; 1/130 exhibited the highest adsorption power.
  • Anub-100 started to emit propene before the start of heating, 130 desorbed propene in the vicinity of 90 [deg.]. 0 1/000 ( ⁇ _100 and
  • toluene was completely adsorbed similarly to the form particles (Fig. 120: 2)). Desorption of toluene was most retarded at (/ 130) (toluene begins to be released at 190 [deg.]). This is because (/ 130 strongly adsorbs propene.
  • Abundance 100 has improved adsorption power as compared with 100. 0 1/000 is much reduced but the amount of toluene desorption, the desorption behavior is almost the same as 000. 0 1 ⁇ _100 whereas desorb much of the adsorbed toluene, (/ 000 and (/ 130 was decreased to the amount of toluene to be removable notably.
  • 0 1/130 is the amount by which the last one of toluene, and the desorption, the desorption
  • the reason for the inactivation of Cu / L_100 is that the amount of B acid to perform propene oligomerization is small or the temperature at which propene is desorbed is low.
  • Cu / M_30 can be used as an excellent HC adsorbent because it can adsorb both propene and toluene.
  • thermogravimetric analyzer TGA, Q50, TA Instruments
  • the oxidation temperature is (impregnated! 3 , and this oxidation temperature is similar to the oxidation temperature of bulk (Fig. 15 ( 32 ), (2) and ( 02 )). 15 ( 32 ), 0) 2) and As a result of analysis, it can be seen that the hydrocarbon was converted to 00 2 or 0).

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Abstract

본 발명은 규칙적인 메조 기공을 가진 제오라이트 입자에 금속이 함침된 탄화수소 흡착제 및 그 제조방법에 관한 것으로, 본 발명의 2-10nm 크기의 메조 기공이 규칙적으로 형성된 제오라이트 입자에 금속 양이온 및 금속 산화물이 함침된 것을 특징으로 하는 탄화수소 흡착제는 규칙적인 메조 기공을 가지며, Si/Al 비율 및 메조기공도를 조절할 수 있어, 저온 시동 구간에서 탄화수소의 흡착력이 증가하고, 상기 탄화수소가 탈착할 때 빠르게 산화시킬 수 있으므로, 자동차 및 산업체에서 발생하는 배기가스의 배출을 절감할 수 있다.

Description

2019/132482 1»（：1^1{2018/016590
【발명의 명칭】
규칙적인메조기공을가진제오라이트입자에 금속이 함침된탄화수소 흡착제 및그제조방법
【기술분야】
관련출원 (들)과의 상호인용
본출원은 2017년 12월 29일자한국특허 출원제 10-2017-0183959호에 기초한우선권의 이익을주장하며, 해당한국특허 출원들의 문헌에 개시된모든 내용은본명세서의 일부로서 포함된다.
본발명은규칙적인메조기공을가진제오라이트입자에 금속이 함침된 탄화수소흡착제 및그제조방법에 관한것으로， 더욱자세하게는제오라이트 입자의 합성 전구체용액에서의 물과에탄올의 함량및 Si/Al 비율을
조절함으로써 메조기공도를조절할수있는메조기공이 규칙적으로형성된 제오라이트입자에 금속양이온및금속산화물이 함침된탄화수소흡착제 및 상기 탄화수소흡착제를이용한탄화수소의 흡착방법에 관한것이다.
【배경기술】
대기오염에 관한관심이 높아짐에 따라미국， 유럽 등의 국가에서 CO, N0X, HC (hydrocarbon) , PM (particulate matter)등의 자동차배기가스규제가 강화되고있다. 이 중 는삼원촉매 (three-way catalysts； TWCs)에 의해 대부분 산화되지만， 이 삼원촉매는약 200-300T온도이상에서 활성을나타내는데， 삼원촉매가활성을나타내지 않는저온시동구간에서 전체 HC배출량의 50- 80%에 해당하는 가배출된다. HC배출을저감시키기 위하여 탄화수소
흡착제(HC trap)에 대한연구가진행되고있다. 탄화수소흡착제란， 저온시동 구간에서 배출되는 HC를흡착하여 삼원촉매가활성을나타내는 200-300T에 도달할때에 탈착시키는장치이다.
탄화수소흡착제로서 높은물리적， 화학적 안정성을가진
제오라이트가많이 연구되고있다. 대표적인 HC배출물질인프로펜(propene), 톨루엔 (toluene)의 흡/탈착측정을통하여 탄화수소흡착제의 성능을테스트하고 있다. 제오라이트구조및 Si/Al 비， 금속함침 유무에 따른탄화수소흡착제의 성능에 관한연구가진행되었다. HC는제오라이트의 A1 함유량(SiMl 비율)이 2019/132482 1»（：1^1{2018/016590 많아질수록높은흡착량을나타내었다. 또한다양한제오라이트구조중 ZSM-5와 베타-제오라이트가가장높은성능을나타내었다. 하지만다량의 수분 (~10 vol%)이 존재할경우탄화수소흡착제의 성능이 저하되기 때문에 이러한문제를 해결하는데에 많은연구가진행되고있다.
최근， 이온교환과정을통해구리를함침한 ZSM-5가 300°C이상의 고온까지 프로펜및톨루엔을흡착하여 탄화수소흡착제의성능을높인 연구가 보고되었다 (M.S. Rei ter et al . , Transport . Res. Part D~Transport . Environ. 43， 123-132, 2016) . 더 많은양의 구리를사용하여 이온교환을진행할경우 일부남은구리가산화구리 (CuO) 형태로 ZSM-5에 존재， 이 CuO가프로펜과 톨루엔을산화시킨다고알려져 있다 (K. Ravindra et al .， Atmos. Environ. 42,
2895-2921 , 2008) . 특히 탈알루미늄 (dealuminat ion)·및탈규산 (des i 1 i cation)을 통해 메조기공을도입한 ZSM-5입자에 구리 이온교환을진행한 Cu-ZSM-5 입자가높은 HC trap성능을가지는것이 보고되었다. 이 Cu-ZSM-5의 경우높은 온도까지 프로펜과톨루엔흡착하고이후탈착하는프로펜과톨루엔을산화하여 배출되는프로펜과톨루엔이 거의 없는것이 보고되었다 (G.C. Kol tsaki s et al . , Prog. Energy Combust . Sci . 23 , 1-39, 1997) . 그러나, 상기
탈알루미늄 (dealuminat ion) 및탈규산 (des i 1 i cat ion)을통해 메조기공을도입한 ZSM-5입자는불규칙한메조기공을가지며， Si /Al 비율및 메조기공도를조절할 수없다는단점이 있다.
이에， 본발명자들은규칙적인메조기공을가지며， Si /Al 비율및 메조기공도를조절할수있는탄화수소흡착제를개발하고자예의 노력한결과, 에탄올과물의 함량을변화시킴으로써 메조기공도를조절한제오라이트입자에 습식함침법을이용하여 금속양이온및금속산화물을함침시킨탄화수소 흡착제를제작하면， 저온시동구간에서 탄화수소의 흡착력이 증가하고， 상기 탄화수소가탈착할때 1빠르게산화되는것을확인하고， 본발명을완성하게 되었다.
【발명의 상세한설명】
【기술적 과제】
본발명의 목적은규칙적인메조기공을가지며， Si /Al 비율및 2019/132482 1»（：1^1{2018/016590 메조기공도를조절할수있는탄화수소흡착제를제공하는데 있다.
본발명의 다른목적은탄화수소흡착제의 제조방법을제공하는데 있다. 본발명의 또다른목적은상기 탄화수소흡착제를이용하는것을 특징으로하는탄화수소의 흡착방법을제공하는데 있다.
【기술적 해결방법】
상기 목적을달성하기 위해서， 본발명은 2-10nm크기의 메조기공이 규칙적으로형성된제오라이트입자에 금속양이온및금속산화물이 함침된 것을특징으로하는탄화수소흡착제를제공한다.
본발명은또한， 2-10nm크기의 메조기공이 규칙적으로형성된
제오라이트입자를금속함유용액에 첨가하여 금속양이온및금속산화물을 제오라이트입자에 함침시키는것을특징으로하는상기 탄화수소흡착제의 제조방법을제공한다.
본발명은또한, 상기 탄화수소흡착제를이용한것을특징으로하는 탄화수소의 흡착방법을제공한다.
【발명의 효과】
본발명에 따른탄화수소흡착제는규칙적인메조기공을가지며, Si /Al 비율및 메조기공도를조절할수있어， 저온시동구간에서 탄화수소의 흡착력이 증가하고, 상기 탄화수소가탈착할때 빠르게산화시킬수있으므로， 자동차및 산업체에서 발생하는배기가스의 배출을절감할수있다.
【도면의 간단한설명】
도 1은본발명의 일실시예에 의해 Cu가함침된 SPP제오라이트의 개략도이다.
도 2는본발명의 SPP입자합성 전구체용액에서 에탄올및 탈이온수의 양에 따른 SPP입자의 주사전자현미경 (SEM) 이미지이다.
도 3은본발명의 SPP입자합성 전구체용액에서 에탄올및 탈이온수의 양에 따른 SPP입자의 투과전자현미경 (TEM) 이미지이다.
도 4는본발명의 SPP입자합성 전구체용액에서 에탄올및 탈이온수의 양에 따른 SPP입자의 X선회절 (X-ray di f fract ion(XRD))패턴을관찰한것이다. 도 5는본발명의 Na-형 SPP입자의 N2물리 흡착등온선및 기공크기 2019/132482 1»（：1^1{2018/016590 분포를관찰한것이다.
도 6은본발명의 H-형 SPP입자및 Cu함침된 SPP입자의 주사전자 현미경 (SEM)이미지이다.
도 7은본발명의 H-형 SPP입자및 Cu함침된 SPP입자의 저배율투과 전자현미경 (TEM)이미지이다 (백색화살표는 5nm크기의 CuO를가리키며， 검정색 화살표는 20·크기의 CuO를가리킨다) .
도 8은본발명의 Cu함침된 SPP입자의 고-각도환상암-시야주사투과 전자현미경 (high-angle annular dark-field scanning transmission electron microscopy(HAADF-STEM))이미지 및 Cu와 A1의 원소맵핑 (mapping)한결과이다. 도 9는본발명의 Cu함침된 SPP입자의 주사전자현미경/에너지 분산
X선분광기 (scanning electron microscopy/ energy dispersive X-ray
spectroscopy, SEM/EDS)맵핑 결과이다 (녹색 점은 Si를나타내며,빨간색 점은 를나타낸다) .
도 10은본발명의 H-형 SPP입자및 Cu함침된 SPP입자의 X선회절 (X- ray diffraction, XRD)패턴을관찰한것이다.
도 11은본발명의 H-형 SPP입자및 Cu함침된 SPP입자의 N2물리 흡착 등온선및기공크기 분포를관찰한것이다.
도 12는본발명의 H-형 SPP입자및 Cu함침된 SPP입자의 저온시동 시험 (cold-start tests, CST)을수행한결과이다.
도 13은탄화수소흡착제 (HC trap)테스트동안， 본발명의 H-형 SPP 입자및 Cu함침된 SPP입자로부터 생성된부산물을질량분석기 (mass
spectrometer)로즉정한질량스펙트럼 (mass spectrum(MS))이다.
도 14는본발명의 H-형 SPP입자및 Cu함침된 SPP입자의 코크스 형성을열중량분석기 (thermogravimetric analyzer , TGA)로측정한결과이다. 도 15는본발명의 연속시험 및 열수처리한 Cu함침된 SPP입자의 저온 시동시험 (cold-start tests(CST))을수행한결과이다.
도 16은연속적인저온시동시험에서 Cu함침된 SPP입자로부터 생성된 부산물을질량분석기 (mass spectrometer)로측정한질량스펙트럼 (mass spectrum(MS))이다. 2019/132482 1»（：1^1{2018/016590 도 17은저온시동시험후，（ 함침된 5??입자의 코크스형성을 열중량분석기로측정한결과이다.
도 18은열수처리한어함침된 입자의 투과전자현미경 0¾0 이미지이다.
도 19는열수처리한 함침된 5??입자및 0（-크리스토발라이트의 X선 회절（_）패턴을관찰한것이다.
【발명의 실시를위한형태】
본발명에서는규칙적인메조기공을가지며 , 八\1 비율및
메조기공도를조절할수있는탄화수소흡착제의 제조방법을이용하여 탄화수소 흡착제를제조후흡착제에 금속양이온및금속산화물함침을한결과， 10 01%의 수분존재하저온시동구간에서 탄화수소의 흡착력이 증가하고, 상기 탄화수소가탈착할때 빠르게산화시킬수있다는것을확인하였다. 금속 양이온이 탄화수소흡착향상과금속산화물이 탄화수소산화에 각각역할을 하는것을확인하였다.
따라서， 본발명은일관점에서, 2 10^11크기의 메조기공이 규칙적으로 형성된제오라이트입자에금속양이온및금속산화물이 함침된것을특징으로 하는탄화수소흡착제에 관한것이다.
본발명에 있어서 , 상기 금속양이온은탄화수소흡착향상에 그리고 금속산화물은탄화수소산화에 각각역할을하여 흡착및산화성능이 개선될 수있다.
본발명에 있어서， 상기 메조기공도（미근 ）는메조기공의 부피가 0.01（페3/§이상이고， 제오라이트의 八\1몰비가 10~200이며, 금속양이온은 제올라이트에 함침될수있는최대중량에 대하여 3~85%의 양으로존재하고， 상기 금속산화물은제올라이트에 함침될수있는최대중량에 대하여 15~97%의 양으로존재하는것을특징으로할수있으며， 바람직하게는메조기공의 부피가 0.1（계3/§이상이고, 제오라이트의 1몰비가 20 80이며， 금속양이온은 제올라이트에 함침될수있는최대중량에 대하여 25 40%의 양으로존재하고， 상기 금속산화물은제올라이트에 함침될수있는최대중량에 대하여 65~75%의 양으로존재하는것을특징으로할수있다. 2019/132482 1»（：1^1{2018/016590 본발명에 있어서， 상기 금속양이온은사， 0, 00, 11, ， , IV,
Figure imgf000008_0001
구성된군에서 선택되는 것을특징으로할수있으며， 바람직하게는 근(1)， 6(11)， 6(111)， 00(1), 00(10,^1(1), (11)， ( (1)또는 ( (11)의 양이온인것을특징으로할수 있다.
본발명에 있어서， 상기 금속산화물은시, 0, 00 ，원， , II·，
Figure imgf000008_0002
구성된군에서 선택된 금속의 산화물인것을특징으로할수있으며,바람직하게는 的， ¾04, ¾03, 00304 , 000, 0, 01120, 011203또는 ( )인 것을특징으로할수있다.
본발명에 있어서， 상기 제오라
Figure imgf000008_0003
제오라이트인 것을특징으로할수있다 :
본발명의 일실시예에서,에탄올및물의 몰조성에 따른 입자의 표면형태의 변화를관찰한결과， 에탄올과물의 제거에 따라 므므구조가 달라진다는것을확인하였다.
본발명은다른관점에서， 2-10™크기의 메조기공이 규칙적으로현성된 제오라이트입자를금속함유용액에 첨가하여 금속양이온및금속산화물을 제오라이트입자에 함침시키는것을특징으로하는탄화수소듭착제의
제조방법에 관한것이다.
본발명에 있어서， 제오라이트입자의 합성 전구체용액은 1 02 : X 시요어 : 0.3
Figure imgf000008_0004
1 ¾0}1 (X = 0.001-0.1,ᅵ= 0.1~9 , =
0~3.9)의 몰비로구성된것을특징으로할수있으며 ,바람직하게는 X =
0.01-0.02,ᅵ = 4~6, å= 0~1의 몰비로구성된것을특징으로할수있다.
본발명에 있어서， 상기 금속양이온은
Figure imgf000008_0005
, II·， ， 1犯,므1，如， ¾， ， ， V, ½， 1¾，如및 로구성된군에서 선택되는 것을특징으로할수있으며， 바람직하게는 Fe(I), Fe(II), 6(111), 00(1), 00(11), (1)， (11), ( (1)또는 01(11)의 양이온인 것을특징으로할수 있다.
본발명에 있어서,상기 금속산화물은시, , £0, ， ， ， II·， 구성된군에서 선택된
Figure imgf000008_0006
2019/132482 1»（：1^1{2018/016590 금속의 산화물인 것을특징으로할수있으며, 바람직하게는 FeO, Fe304 Fe203 , C03O4 , CoO, NiO, C112O, C112O3또는 CuO인것을특정으로할수있다.
본발명에 있어서， 상기 제오라이트입자의 합성 전구체용액에서
에탄올과물의 함량에 따라메조기공도가변하는것을특징으로할수있다.
본발명에 있어서 , 상기 제오라이트입자의 합성 전구체용액에서
Si :Al의 몰비가 5~500인 것을특징으로할수있으며， 바람직하게는 20~50인 것을특징으로할수있다.
본발명은또다른관점에서, 상기 탄화수소흡착제를이용한것을 특징으로하는탄화수소의 흡착방법에 관한것이다.
본발명에 있어서， 상기 탄화수소는프로펜, 톨루엔， 에탄， 에텐， 프로판， 벤젠, 자일텐, 에틸렌， 2 -메틸부탄， 포름알데히드， 스틸텐, 아세트알데히드로 구성된군에서 선택되는것을특징으로할수있으나, 이에 제한되지 않는다. 본발명에서 탄화수소는석유화학정유도료도장공장의 제조와저장과정 , 자동차배기가스， 페인트나접착제등건축자재， 주유소의 저장탱크등에서 발생하는휘발성유기화합물 (Vo l at i l e Organi c Compounds)을모두포함할수 있다. 본발명의 다른실시예에서, 구리를함침하지 않은 SPP제오라이트의 경우， 프로펜을흡착하지 못하며 , 톨루엔의 경우약 140°C에서 6분까지 흡착후 흡착한양을대부분탈착하는것을관찰하였다. 5중량%구리를담지한 SPP 제오라이트의 경우프로펜의 흡착량이 급격히 증가하여， 약 90°C에서 5분까지 흡착후탈착하여， 일부분을배출하며 , 톨루엔의 경우약간증가하여 190°C에서 7분까지 흡착한후탈착하여 일부분을배출하는것을관찰하였다. 이 때
배출되지 못한프로펜및톨루엔의 경우 CuO에 의해산화되어 이산화탄소와 일산화탄소로변환되는것을관찰하였다.
특히 프로펜의 경우흡착한양이 Cu2+이온의 양에 비례하여 증가한다는 것을확인하였다. Cu/M_30에서 가장높은프로펜흡착량을보였고， Cu/L_100에서 가장낮은흡착량을보였다. SPP제오라이트의 구조에 의해프로펜및톨루엔을 흡착하는 Cu2+이온이 대부분외부표면에 존재하고, 산화시키는 CuO또한표면에 존재한다는것을확인하였다.
따라서， Cu2+이온이 먼저 프로펜및톨루엔을흡착하고， 탈착할때주변의 2019/132482 1»（：1^1{2018/016590
CuO에 의해 탈착된프로펜및톨루엔의 일부가쉽게산화된다는것을알수 있다 (도 1) . 즉， SPP제오라이트의 격자구조에 의해 탄화수소흡착제의 성능이 향상된다는것을확인하였다.
본발명에서, 제올라이트의 프로펜및톨루엔흡착력은표면적 및산의 증가와함께증가한다. 프로펜과증기가동시에 H-형 ZSM-5제올라이트에 흡착될 때， 상기 프로펜과증기는흡착부위를놓고경쟁한다. 프로펜은 Cu-ZSM-5에 화학적으로강하게흡착되어 H-ZSM-5에 비해화학흡착이 크게증가한다 (M.
Navi ani -Garci a et al . , Environ. Sci . Techno 1. 47, 5851-5857, 2013； H.W. Jen et al . , Catal. Lett . 26, 217-225, 1994) . 증기의 경쟁흡착을고려한 Cu-ZSM- 5에서 프로펜및톨루엔의 흡착에 관한분자시뮬레이션 연구는프로펜이 주로
ZSM-5내부에 존재하는 Cu2+이온에 위치한다는것을밝혔다 (B. Puer tol as et al . , Chem. Commun. 48, 6571-6573, 2012) . 특히, ZSM-5골격과결합된 Cu2+이온 중에서， 브뢴스테드산어산)에서 양성자를대체하는 Cu2+이온이 프로펜의 흡착 친화력을증가시키는데 결정적인 역할을한다 (D.J. Parr i 1 lo et al . , J. Catal . 142, 708-718, 1993) .
본발명의또다른실시예에서， Cu함침된 SPP제오라이트 (Cu- impregnated SPP)의 열수안정성 테스트를수행한결과， 열수처리된 Cu함침된 SPP는대부분구조가다른구조로변환된것을확인하였다. 따라서 , 프로펜및 톨루엔의 흡착이 전혀 일어나지 않는것을알수있다.
하지만남아있는 CuO에 의해 기존 Cu함침된 SPP입자보다높은
고온에서 (450-530T이상)프로펜및톨루엔이 완전산화되는것을관찰하였다.
Cu/OOO의 경우일부 SPP구조가남아있는것을확인하였다. 구조변환이 Na에 의해 활성화되므로， 남아있는 Na의 양이 H_100에서 가장적다는것을알수 있다. 이는가장메조기공도가높은 H_100이 Na+에서 H+로교환할때 많은메조기공에 의해 이온교환이 보다쉽게 일어나기 때문이다.
이하, 실시예를통하여 본발명을더욱상세히 설명하고자한다. 이들 : 실시예는오로지 본발명을예시하기 위한것으로, 본발명의 범위가이들 실시예에 의해 제한되는것으로해석되지 않는것은당업계에서 통상의 지식을 가진자에게 있어서 자명할것이다. 2019/132482 1»（：1^1{2018/016590
실시예 1： SPP입자의 합성
SPP입자를합성하기 위하여， SPP입자합성 전구체용액을제조하였다. 상기 SPP입자합성 전구체용액을제조하기 위하여， 알루미늄
이소프로폭시드 (alumin· i sopropoxide)(98%, Al fa Aesar)를
테트라에틸오르토실리케이트 (tetraethylorthosi l i cateKTEOS, 98%, Sigma- Aldr i ch)에 첨가하고， 교반하면서 테트라부틸포스포늄
하이드록사이드 (tetrabutylphosphonium hydroxide)(TBPOH, 40%, Al fa Aesar)를 상기 혼합물에 한방울씩 첨가하였다. 편의상상기 전구체용액을화합물 A라고 한다. 탈이온수에 수산화나트륨 (NaOH, 98%, Sigma-Aldr ich)을첨가하고, 상기 NaOH용액을상기 제조한화합물 A에 첨가하여 최종합성 전구체용액을
제조하였다. 그후, 최종합성 전구체용액을폴리프로필렌병에 밀봉하고 적어도밤새 추가로가수분해시켰다.
Si /Al 비율이 상이한샘플을얻기 위하여， 상기 합성 전구체용액의 최종 조성을 1 Si02 : x A1203 : 0.3 TBP0H : 10 ¾0 : 2x NaOH : 4 EtOH (여기서 x = 0.005, 0.01또는 0.0167)로하였다. 실시예 2： SPP입자의합성에서 에탄올및수분함량에따른메조가공도 분석
SPP입자합성 전구체용액에서 에탄올과탈이온수의 양에 따른
메조기공도를분석하기 위하여， 실시예 1의 가수분해단계후의 합성 전구체 용액을캡-프리 (cap-free) 45mL테프론라이너 (Tef lon-1 iner)로옮기고실온에서 교반하면서 일정 함량의 에탄올과물을증발시켰다.
상기 언급된몰조성과함께 에탄올제거후의 몰조성은 1 Si02 : x A1203 : 0.3 TBP0H : 10 ¾0 : 2x NaOH : 0 EtOH이고， 에탄올의 양및물의 양의 절반을제거한후의 몰조성은 1 Si02 : x A1203 : 0.3 TBP0H ： 5 ¾0 ： 2x NaOH : 0 EtOH이다.
생성된고체 생성물은원심 분리, 디켄팅 및 탈이온수세척을 5회
반복하여 회수하였다. 이후， 70OC에서 밤새 건조시키고, 200mL/분의 기류 2019/132482 1»（：1^1{2018/016590 하에서 1°<3/분의 상승속도로 12시간동안 550°〔조건에서 하소시켰다.
(1)증발없음， (2)에탄올증발및 (3)추가물증발후얻은샘플의 라벨은각각 a_El_n.0, a_E0_n.0및 0(_에10.5로표시하였다.0(는 ᆻ1 비율을나타내며，표와 옆의 숫자는기존전구체용액에 대한에탄올과물의 비율을나타낸것이다.
합성 전구체용액의 몰조성이 입자합성에 미치는영향을관찰하기 위하여 ,상기 제조방법으로수득한 100_ _¥1.0， 100_抑_¥1.0， 100_玉0_ 0.5， 50_£01.0, 50_E0_n.0, 50_ _¾¾.5, 30_E1J1.0, 30_別」 .0및 30_ _10.5의
Figure imgf000012_0001
-4800전계방출주사현미경 作표 표則을이용하여 주사전자현미경 묘 )이미지를관찰하였다.
그결과, 100_ _¥1.0입자는 400-6001™의 크기를가지며 부드럽지 않고 다소울퉁불퉁한표면을나타낸다 (도 2(31)).에탄올제거 후얻은
100_別_¥1.0의 각입자는주로더 얇거나날카로운나노시트로이루어졌으며 입자크기는감소하였다 (도 2(32)). 물을추가로제거한후에 합성된
100_ _0.5샘플의 형태는 100_표0_11.0과유사하게 날카로운나노시트로 이루어졌으며 크기는더욱감소하였다 (도 2(크3)).
따라서,합성 전구체용액의 에탄올 0¾況의 가수분해로인해 생성된)과 물의 양은 므므입자합성에 영향을끼친다는것을알수있다. 실시예 3： 8??입자의합성에서 八1비율의 영향
에탄올과수분함량의 변화와함께합성 전구체용액의 ᆻ1비에 따른 므입자의 변화를확인하기 위하여 , ^0^102 3031전계 방출투과전자 현미경作표 표酌을이용하여 투과전자현미경 (1표¾0이미지를관찰하였다.
그결과， 100_射_¥1.0은주로두꺼운나노시트로구성되었지만 (도 3(31)), 에탄올의 증발후 100_표0_ .0은두께가크게 감소한날카로운뼤나노시트 또는라멜라를나타낸다 ((도 3(32)). 도 2(32)및 3)에서 나타난바와같이， 물을추가로제거하면 , 입자크기와나노시트크기의 두께가모두감소하는 것을확인하였다 (도 3(82) 및 (33)).
ᆻ1비율이 50과 30으로합성된샘플의 경우, 30_먀_犯.0을제외한 2019/132482 1»（：1^1{2018/016590 모든입자가나노시트로구성되는것을확인하였다 (도 3(01))· 50_묘0切샘플과 100_표0 샘플은모두나노시트의 형태가에탄올의 제거 및 에탄올/물의 제거에 따라단조롭게증가하였다 (도 3作2)및 3)). 1비율을 30으로낮추면， 더 두꺼운나노시트가형성되었다 (도 3(02) 및 (03)).30_먀_1.0은부드럽고 _작은 구형 입자로구성되었다 (도 3(:1)).
따라서 , 30_먀_11.0은 1제오라이트단계와다른단계의 형성이 있다는 것을알수있다.
또한, 표 이미지 및 TEU이미지를조합하여 분석한결과， 표 의 가수 분해로인하여 생성된에탄올이 없는경우에
Figure imgf000013_0001
나타난다는것을 확인하였다. 실시예 4： SPP입자의 결정성 확인
SPP입자의 결정성을확인하기 위하여 ,실시예 1에서 수득한 SPP입자에 대하여 x선회절 (x-ray diffract ion(XRD))분석을수행하였다. XRD분석은
RINT2000수직 고니오미터 (goniometer)가장착된 Rigaku모델 D/MAX-2500V/PC를 이용하여 Cu Ka선 (40kV， 100mA, A=1.54 A)에 기초하여 하소된제오라이트 샘플의 X-선회절 (XRD)패턴을얻은후， Mercury소프트웨어 (버전 3.8,
Cambridge Crystallographic Data Center웹사이트에서사용가능)를이용하여 해당결정학정보파일 (CIF)로분석하였다.세가지 CIF파일은모두 Material Studio 7.0 (Accel rys)에서 제공하였다.
그결과， 모든샘플의 XRD패턴은비결정질인 30_E1_W1.0을제외하고는 MFI구조에 해당하는대표피크가나타났다.그러나， SPP입자는결정성이 확인되었음에도불구하고， 몇 가지 XRD피크가나타나지 않았다.특히， (hkl) 평면에 해당하는 XRD피크는약화되었지만, (hOl)또는 (OkO)평면에 해당하는 피크는나타났다 (도 4). 이는， SPP에서 나노시트가 ac-평면에 많거나,측정하는 동안샘플홀더가 ac-평면에 많이 정렬하였기 때문일수.있다.또한， (hOl)또는 (OkO)평면에 해당하는특정 피크로구성된 XRD패턴은 b축을따라얇은층의 MFI나노시트가형성되었다는것을의미한다 (H. Kim et al .， Catal. Tod. In press , 2017) . 2019/132482 1»（：1^1{2018/016590 따라서, SPP입자형성에서 에탄올이 b축의 결정 성장 (crystal growth)에 관여한다는것을알수있으며， 에탄올을제거하면나노시트의 두께가줄어들어， 얇은나노시트를가진 SPP입자가형성된다는것을확인하였다. 실시예 5： SPP입자의 기공구조분석
SPP입자의 기공구조를분석하기 위하여， Mi cromer i t ics ASAP2020 시스템을이용하여 77K에서 N2물리 흡착등온선을측정하였다. 기공크기 및 부피는제조자가제공한 BJH(Barrett-Joyner-Halenda)방법에 기초하여
계산하였다.
그결과， 0.4-0.8의 상대 압력 범위에서 Si /Al 비율과관계없이， 합성 전구체용액에서 에탄올의 제거와추가적인물의 제거는메조기공도를
증가시키는것을확인하였다 (도 5(al) , (a2)및 (a3)) . 또한， BJH기공크기 분포에서도 Si /Al 비율과관계없이， 합성 전구체용액에서 에탄올의 제거와 추가적인물의 제거는메조기공영역이 증가하는것을확인하였다 (도 5(bl)， (b2) 및 (b3)) .
SPP입자에서 sel f-pi l lared MFI나노시트또는박막 ( lamel lae)사이에 중간기공이 형성된다. 따라서， 생성된 SPP입자， 특히 2-10nm범위의
메조기공은판상 (pl ate-l ike)나노시트의 두께 감소및나노시트사이의 간격의 증가로유도된것임을알수있다.
또한， 높은 Si /Al 비율을가지는 SPP입자는합성 전구체용액에서 에탄올및 에탄올/물함량을제거한후에 보다강한메조기공성을나타내는것을 확인하였다 (도 5(b2) 및 (b3)) . 이는, 더 낮은 Si /Al 비율 (50또는 30)을가지는 SPP입자가더 두꺼운또는잘게 잘린나노시트를가지기 때문이다.
또한， 다른척도에서 각샘플의 표면적을측정하기 위하여 ,
BET(Brunauer-Emmett-Tel ler)표면적 분석 및 변형된 t-plot방법을이용하였다.
Smeso+ext및 Vm i cr。는변형된 t-plot 방법을사용하여 즉정하였고， Sm i crᄋ는 하기 식을사용하여 계산하였다.
Smicro - SBET Smeso+ext
또한， V2-1C)은 2-10nm범위의 BJH기공크기 분포를이용하여 계산하였다. 2019/132482 1»（：1^1{2018/016590 그결과，犯물리 흡착등온선으로부터 계산된표면적 및 기공부피는 에탄올및 에탄올/물함량을제거한후메조기공이 증가한다는것을
확인하였다（표 1）.
하기 표 1은 7걔에서 ¾물리 흡착등온선에서 계산된하소된 므 샘플의 기공부피를나타낸것이다 .（3는변형된 1：-?1야방법을사용하여
Figure imgf000015_0001
Figure imgf000015_0002
나타낸것이고， 13는射11기공크기 분포데이터이다）.
【표 1]
Figure imgf000015_0005
Figure imgf000015_0004
입자（용）/ 4炯3용액（ ）의 고정 비율로， 1¾1질산암모늄 _ 03）용액에서 6시간 동안 80°〔조건하에 교반하여 이온교환된샘플을수득하였다. 상기 수득한 샘플을원심 분리 , 디켄팅 및 탈이온수,세척을 3회 반복하여 회수하였다. 회수한 샘플은밤새 70°（:에서 건조시키고, 200此/분의 공기 흐름하에서 10°（；/분의 상승속도로 500°（:에서 6시간동안하소시켰다.
그결과수득한입자를 100, 000및 130으로표시하였다.
Figure imgf000015_0003
및느은각각생성된 입자에서 고， 중및 저 메조기공성을의미하며, 끝의 숫자는 ᄊ1 비율을나타낸다.
（ 함침된 !3입자를제조하기 위하여， 습식 함침법（ 크 impregnat ion)을이용하여 ( 를 H-형 SPP입자에 함침시켰다. 구체적으로, 질산구리 삼수화물 (Cu(N03)r3H20, 98%, Sigma-Aldr i ch)을탈이온수에 용해시켜
0.04M질산구리 I KCU(N03)2)용액을제조하였다. H-형 SPP입자를질산구리 용액에 첨가하여 최종적으로 5중량% Cu가함침되게하였다. 그뒤, 혼합물을 회전식 증발기에 넣고수분을모두제거한후, Cu함침된 SPP를회수하여，
100°C에서 3시간동안건조시키고， 200mL/분의 기류하에서 1°C/분의 상승 속도로 550°C에서 6시간동안하소시켰다.
그결과수득한입자를 Cu/L_100, Cu/H_100및 Cu/M_30으로표시하였다. 여기서 Cu는 H-형 SPP입자 (L_100, H_100및 M_30)에 구리가함침된 것을 의미한다. 실시예 7： H-형 SPP입자및 Cu함침된 SPP입자의물리적성질
H-형 SPP입자및 Cu함침된 SPP입자의 형태를관찰하기 위하여，
Hi tachi S-4800전계 방출주사현미경 (FE-湖 M)및 Tecnai G2 F30ST전계 방출 투과전자현미경 (FE-TEM)을이용하여 주사전자현미경 (SEM) 이미지 및투과 전자현미경 (TEM) 이미지를관찰하였다.
그결과, H-형 SPP입자및 Cu함침 ¾ SPP입자의 형태가 Na-형 SPP 입자의 형태와유사하다는것을확인하였다 (도 6및도 7) .
또한, Hi tachi SU-70전계방출주사전자현미경을이용하여 얻은 에너지분산형 X-선분광분석법 (energy di spersive X-ray spectroscopy(EDX)) 데이터의 원소분석 및 SEM/EDX맵핑을수행하였다.
그결과， H-형 및 Cu함침된 SPP입자의 Si /Al 비율은 L_100및
Cu/L_100을제외하고, Na-형 입자의 Si/Al 비율과유사하였다 (표 2및표 3) . L_100및 Cu/L_100의 경우， 평균값과비교하여 표준편차값이 높아, 정확한 Si /Al 비율값을얻는데 어려움이 있다.
H-형 입자의 Na/Al 비율아 0에 가까운값을가지므로， Na+이온이
H+이온으로완전히 교환되었다는것을알수있다. Cu중량%와관련하여， 모든 Cu함침된 SPP는통상값인 5중량%보다작은 3-4중량%를나타낸다 (표 2및표 3) . \ 0 2019/132482 1»（：1^1{2018/016590 따라서 , 표 2및표 3의 01 %값과도 9의況 ¾1 이（맵핑 결과를 비교한결과，어凡_100과 /000의 경우，
Figure imgf000017_0001
표면에 있다는것을확인하였다（도 9）. 반대로，（노/¾1_30은 5.6（ 중량%를포함하며， 이는 3묘1«/班¾맵핑에서 얻은값인 3.5 ^중량%보다높다.
況 ¾1 ^（맵핑에서（ 종은강렬한적색을나타내므로， 입자상에 균질하게 분포하지 않는다는것을알수있다（도 9）.
하기 표 2는 형 및（ 함침된
Figure imgf000017_0002
입자의 데이터로부터 측정한 원소분석 결과이다（3는각샘플의묘 데이터를나타낸것이고, 15는도 9의 표 묘狀맵핑으로부터 측정한구리 함침된 !3의 %데이터이다）.
【표 2]
Figure imgf000017_0003
입자의표狀데이터로부터 측정한원소분석 데이터를나타낸것이다）.
【표 3】
Figure imgf000017_0004
2019/132482 1»（그1^1{2018/016590
Figure imgf000018_0004
형 므므입자및（ 함침된 입자의 나노시트구성물을관찰하기 위하여 분석을수행하였다.
그결과， 형 입자는나노시트（丄_100및 000는나노시트가
나타나며， 130는단편또는잘게 잘려진나노시트가나타나는것을
확인하였다（도 7（81）, （32）및 （33））.
따라서 , 양성자로이온교환한후에도 입자의 나노시트가보존된다는 것을알수있다.
Figure imgf000018_0001
입자는 20m크기의 압자가산발적으로관찰되었으며（도 70:1）에서 검은색화살표로표시）， 5·크기의 입자도많이 관찰되고잘
분포되어 있다（도 7（01）, （02）, （03）및도 8）. 61， 82및 24의 ᆻ1 비율을 가지는 제오라이트에서 이온교환할수있는최대 중량%는각각 0.8, 0.6 및 2.1이다. 본발명의 므므입자의（ 함침시， 약 3~4중량%의 0:를사용하였다. 따라서， 상기 표면에 관찰된작은입자들이 010이라는것을알수있다. 원소맵핑을통하여 상기 입자의 나노시트구성물을관찰한결과, ^ 원자가 5??입자에 균일하고연속으로분포되어 있는것을관찰하였다（도 8）. 따라서，어원자는 므표면및 므 내부와표면에서 양이온의 형태로
존재한다는것을알수있다.
형 므므입자및（노함침된 8??입자의 결정성을확인하기 위하여 , XI® 분석을수행하였다.
그결과, 100,｝ᄂ100및 130의 XI犯패턴은양성자로이온교환된
Figure imgf000018_0002
입자모두가도 4의 기존 1유형 제오라이트구조를유지하는것을관찰하였다. 또한，（ 함침된
Figure imgf000018_0003
입자도기존 ¾ 1제오라이트구조를유지하는것을
확인하였다（도 10）.
따라서，（：11로함침된후에도드 입자의 나노시트가보존된다는것을알 수있다.
（ 함침된샘플은（ 0에 상응하는 XI犯피크（약 36。및 39°）가나타났고， 2019/132482 1»(：1^1{2018/016590 크기는 방정식에 기초하여 계산한결과 20 인 것을확인하였다（도 10）. 따라서 ,
Figure imgf000019_0001
크기의（ 0입자가모두 므 표면에 존재한다는것을 알수있다.
또한，（ 0입자가무작위로배향되었다고가정하면
Figure imgf000019_0002
중 20™크기의 01（）양은대응하는）0江＞피크영역에서 간단하게추정할수있다. 구체적으로，（：110상에서 （002）면의 XI犯피크의 상대 면적은（：11凡_100, 01 _100 및 _30이 각각 0.6， 1및 0.4이다. 함침된（ 종이 0의 형태로존재한다는 것을고려하면， 5·크기의（ 0양은（노/130,（：11凡_100및 01/000의 순서로 많다는것을알수있다. 실시예 9： 11-형 8??입자및 Cu함침된으 입자의 기공구조분석
}{-형 입자및如함침된 므므입자의 기공구조를분석하기 위하여， 실시예 5와동일한방법으로 물리 흡착등온선을측정하고， 기공크기 및 부피를계산하였다.
또한， 다른척도에서 각샘플의 표면적을측정하기 위하여 , 실시예 5와 동일하게 1¾1'（81내131161—표_61;1;-1611아）표면적 분석 및 변형된 1; 101방법을 이용하였다.
그결과,（ 함침후에 형 입자본래의 특성이 보존된다는것을 확인하였다. 미세기공성 표면적은（ 함침후어_형 드!3에 비해 90-105%）현저하 변화하지 않았고， 메조기공및외부표면적은감소하였다（1_100의 경우 8%， 000및 13◦의 경우 17-29%）（도 11및표 4）. 상기 메조기공의 감소는보다 높은메조기공도를가지는 입자에서 현저하게 나타났다. 이는, 5™크기의 0:0입자가 입자의 메조기공표면상에 존재한다는것을의미한다.
표 4는 형 및 ^함침된 므입자의 기공구조및산적정 결과를 나타낸것이다（°는외부및 메조기공표면에 위치하는모든 6산）.
【표 4]
Figure imgf000019_0003
2019/132482 1»（：1^1{2018/016590
Figure imgf000020_0004
입자내산을정량화하기 위하여
Figure imgf000020_0001
및 2,6-디- 근 -부틸피리딘（2,6-（1卜1611:-1）1 ＞ ）7 （1 16（（ ¾¾0）이용하여 푸리에 변환 적외선분광법（ -110을수행하였다.
Figure imgf000020_0002
셀에서 자가펠릿화된（361£ 61161； 6（1）생플을 6시간 동안진공및 500°〔조건하에서 활성화시켰다.샘플에 피리딘 25°（:에서 포화 증기압 2.80出¾）또는 2,6-디 6 _부틸피리딘（（«¾ ; 25°（:에서포화증기압
0.034^3）의 포화증기를 30此/분 ¾유동으로 1시간동안흐르게 하여
흡착시켰다.이 후, 150°（:로냉각시킨후， 60분진공하에 약하게부착된
Figure imgf000020_0003
또는 dTBPy분자를제거한후에 활성화된샘플의 17-11?스펙트럼을얻었다.
이 후，肝-¾스펙트럼에서 1450011 -1（ ）， 1550예_1어刀및 16150^ （ 표므刀의 파수를이용하여총루이스산， 총브뢴스테드산및메조기공및 외부표면에 위치하는브뢴스테드산의 농도를각각계산하였다.편의상,루이스 산및브뢴스테드산은각각느산（丄크 및 6산어 3^6）으로표시하였다. 그결과, II-형 므므입자（ 100, 000및 130）의 8산은주로메조기공 및외부표면 영역에 위치한다는것을확인하였다.구체적으로， 총묘산의 양은 130（191 01 ， 주로가장낮은 /시 비율때문에）이 가장크고， 100（45 2019/132482 1»（：1^1{2018/016590
（|01/§， 주로가장낮은메조기공및외부표면적 때문에）이 가장낮았다（표 2）.
^함침을수행한후， （노/130에서 총 6산의 양이 69 | 01八감소하였고， （ 凡_100에서는 24 이 감소하였다. 이는,（ 함침된 3??입자에서 0!2+ 이온의 양이（ /13◦에 가장많고，（：11凡_100에 가장적다는것을의미한다.
따라서，뺘1제오라이트구조에 01를함침할때, 낮은 八\1 비율을 가지는 므입자가많은양의 01 2+이온으로교환된다는것을알수있다.
01凡_100및 01/000에서총 8산의 감소와함께외부 8산의 감소가 나타났다. 이는， 01 2+이온의 대부분이 메조기공및외부표면에 위치한다는것을 의미한다. 01/130에서는외부 8산이 감소하였다.
따라서,（ 2+이온이 메조기공및외부표면보다는내부표면에
위치한다는것을알수있다. 실시예 10: 11-형으 입자의 저온시동시험ᄄ況）
저온시동시험은 150내지 250,범위로체질한
Figure imgf000021_0001
샘플을석영 관형 반응기（내경 6.9™및외경 9.6™）에 충전하여수행하였다. 온도는온도조절기（卵35 此 크 를사용하여 조절하였고, 공급증기의 흐름속도는매스플로우조절기（바曲 16^, 01^10 0를사용하여 조절하였다. 온도는샘플이 놓인석영 프릿아래의 열전대를사용하여 측정하였다. 증기는 가열된튜빙에 일정량의 물을주압하여 생성하였다. 반응기를통과한후, 냉각수（1° 가순환되는트랩（打31>）이 배출구가스스트림（ 꽤）내의 증기를 제거하였다. 트랩후배출구를질량분석가（:
Figure imgf000021_0002
연결하였다.
하소된 형 3??입자를 600°（：에서 30분동안 30吐/분의 ¾유동하에 30분동안활성화시켰다.
Figure imgf000021_0003
에서는 100抑 의 프로펜
Figure imgf000021_0004
1 01%의 ¾, 1（切01%의 ¾0및 ¾와균형을이루는 56¾>1）111의 을포함하는
100此/분의 가스혼합물을활성화된샘플에 공급하여
Figure imgf000021_0005
되도록하였다. 상기 공급에서, 56（切1）11 의 은가스유출구의 몰조성 정량화를 위한내부표준으로사용하였다.
작하여 5분동안유지하였다. 이 후，
Figure imgf000021_0006
2019/132482 1»（：1^1{2018/016590 반응기를 50°(:/분의 상승속도로 600° (:까지 가열하고, 600°(1에서 30분동안 유지하였다.
공급성분과관련하여 차이를확인하기 위하여， 의
Figure imgf000022_0001
프로펜의 경우 42,톨루엔의 경우 91， 02의 경우 32, ¾0의 경우 18에 해당하는 신호를검출하였으며 ,산화공정을검출하기 위하여， ¥의
Figure imgf000022_0002
¥2의 경우 44에 해당하는신호를모니터링하였다.
그결과， 100, 000및 130의 경우거의 동일한배출프로파일이 나타났다 (도 12).구체적으로， 형 므!3는초기에는프로펜을거의 흡착하지 않았다 (도 12(31)). 이는스트림 (10\ 1%공급)의 강한흡착억제 때문이다.
000에서는,온도상승직후에 프로펜의 일부가소비된후공급농도로
회복하였다 (도 12(31)).
반대로， 톨루엔은온도가 140° (:로증가할때까지 흡착되며,그후 2-3분 내에 급속하게 탈착하였다 (도 12(32)).300°0이상에서는프로펜과톨루엔을 흡착하지 않고통과시켰다 (도 12(31) 및 (32)). 또한, 002나 (：0가발생하지 않는것을확인하였다.
따라서， 탄화수소 (프로펜및톨루엔)의산화가일어나지 않았음을알수 있다.
프로펜또는톨루엔의 비산화적인전환에 의해 생성된탄화수소의 생성을 확인하기 위하여, 111/2 = 56, 77및 106에 해당하는신호를관찰하였다.
그결과， 다른형태의 탄화수소가생성되었다는것을확인하였다 (도
13(31), (32) 및 (83)). 구체적으로, 111/2 = 56은프로펜올리고머화에 관련된 2 -메틸부탄이고 (도 12(31)),미八 = 77(도 13(32)) 및 107(도 13 3))은톨루엔 불균등화에 관련된벤젠및자일렌 이성질체 (벤즈알데하이드를포함)이다.벤젠 및자일렌이성질체는모든 형
Figure imgf000022_0003
입자에서 생성되는반면， 2 -메틸부탄은
000에서만생성되었다 (도 13).
또한， 01八 = 56의 ¾犯신호가발생하였을때， 프로펜 배출이 감소하였다가, 다시 증가하는동시에 톨루엔이 탈착되는것을확인하였다 (도 12(31) 및 (32)). 이 때,톨루엔탈착후비어 있던 8산은프로펜을신속히 흡착하여 촉매
작용 (올리고머화)을일으킨다는것을알수있다. 2019/132482 1»（：1^1{2018/016590 이러한특징을요약하면,묘-형 3??（1_100, 000및 130）는 1祀3의 활성 온도까지 프로펜및톨루엔의 배출을지연시키고， 탄화수소를산화시키는능력을 가지고있지 않다는것을알수있다.
따라서, 형으 입자는저온시동구간에서 ^흡착제로사용하는데 적합하지 않다는것을확인하였다. 실시예 11:（:11함침된 ?입자의 저온시동시험犯射）
실시예 10와동.일한방법으로，어함침된 !5입자의 051성능을
확인하였다.
그결과，（ 함침된 므?입자는 11-형 므입자와비교하여 다른독특한 방출프로파일을보였다（도 12（131）， 比2）및 0^3））. 01함침된 므입자는초기 온도 70 에서 프로펜을흡착할수있었으며， &1/130이 가장높은흡착력을 나타냈다.어凡_100은가열이 시작되기 전에 프로펜을방출하기 시작하였으며, 0:/130은 90°〔부근에서 프로펜을탈착하였다 . 01/000은（ 凡_100와
어/130의 중간정도의 성능을보였다.
또한, 형 므 입자와유사하게 톨루엔을완전히 흡착하였다（도 120:2））. 톨루엔의 탈착은（ /130에서 가장지체되었다（톨루엔이 190°〔에서 방출되기 시작함）. 이는,（ /130이 프로펜을강하게흡착하기 때문이다.
0:凡_100은 100에 비해흡착력이 향상되었다. 01/000는톨루엔 탈착량이 많이 감소하였지만, 탈착거동은 000와거의 동일하다. 01凡_100은 흡착된톨루엔의 대부분을탈착하는반면，（ /000및（ /130은탈착되는 톨루엔의 양이 현저하게 감소하였다.
따라서， 01/130은가장늦게톨루엔이 탈착되고， 탈착되는양이
감소하므로， 효과적인敗흡착제인 것을확인하였다.
탈착된프로펜과톨루엔의 감소된양은（：¾와（：0（도 12比3）） 및 다른 탄화수소로의 활성 ¾환과상관관계가있다（그림 130）1）， 0）2）및 0）3））.（ 함침된 므는期2또는期로의 효과적인산화로인해， 약 600°（:의 모든공급 성분을제거할수있다. 특히 , ¥2및 ）는 200°〔에서 발생하였으며，（：11凡_100, 01/000및 /130（각각 300°（：, 350°〔및 370°0순으로증가하였다. 2019/132482 1»（：1^1{2018/016590
Cu함침된 SPP입자에서 탈착된프로펜의 일부는 Cu/L_100을제외하고 300°C에서 올리고머 (m/z = 56)로전환된것을확인하였다 (도 13(bD).
Cu/L_100이 비활성된것은프로펜올리고머화(propene oligomerization)를 수행하는 B산의 양이 적거나, 프로펜이 탈착되는온도가낮기 때문이다.
톨루엔불균등화와관련된질량스펙트럼 (mass spectrum(MS))(m/z = 77 및 106)는톨루엔이 탈착된동일한위치에서 발생하였다 (도 13(b2)및 (b3)). 톨루엔탈착은 Cu/H_100, Cu/L_100및 Cu/M_30의 순서로강하기 때문에， 톨루엔 불균등화로인한 MS신호도동일한순서로나타났다.또한， 톨루엔불균등화로 인한 MS신호외에도， Cu/H_100및 Cu/M_30에서 약 9-11분(320_370°C에 해당)에 불분명한피크가관찰되었다. 상기불분명한피크는톨루엔분자사이의 부반응으로생성된것이다.
따라서， Cu/M_30는프로펜과톨루엔을모두흡착할수있기 때문에 우수한 HC흡착제로사용가능하다는것을알수있다.
저온시동테스트를완료한후, 코크스의 형성을확인하기 위하여, 테스트된샘플을 lOOmL/분와공기흐름하에서 5°C/분의 상승속도로 800°C까지 가열하여 열중량분석기 (TGA， Q50, TA Instruments)를이용하여 측정하였다.
그결과， 코크스가거의 형성되지 않는것을확인하였다 (도 14) . 실시예 12: Cu함침된 SPP입자의 안정성 확안
Cu함침된 SPP입자의 안정성을확인하기 위하여, 열수처리되지 않은 Cu 함침된 SPP입자및 열수처리된 Cu함침된 SPP입자의 연속적인 CST를
수행하였다.
연속적인 CST성능측정을위하여， 반응기를 600°C에서 70°C로냉각시키는 동안， 6시간동안 100mL/분의 He를흐르게 하여， 유동반응기에 증기가존재하지 않는다는것을확인하였다. Cu/L_100, Cu/H_100및 Cu/M_30은 800°C에서 24시간 동안 10 vol%의 증기와함께 100 mL/분의 He하에서 열수처리하였다. 생성된 샘플은 Cu/L_100 HT, Cu/H_100 HT, 및 Cu/M_30 HT로표시하였으며， 여기서 HT는 열수처리를나타낸다.
열수처리된 Cu함침된 SPP의 저온시동테스트 (cold-start tests(CST)) 2019/132482 1»（：1^1{2018/016590 성능을상기와동일한조건하에서 관찰하였다.
그결과， 01/000및 /130은프로펜및톨루엔배출이 유사하나， 어凡_100의 경우， 프로펜및톨루엔은 3사이클에서 일찍 방출된다는것을
관찰하였다（도 15（31）, （바） 및 （01））.
부산물탄화수소프로파일（도 16）에 따르면， 프로펜및톨루엔은
3사이클에서 다른탄화수소로더 전환되었다. 이와동시에， 002및 00발생 시간이 1분미만으로지연되었고해당 002/¥생성량은감소하였다.
연속적인테스트에 따른점진적인성능저하에도불구하고，（ 함침된 으므?입자는狀흡착제의 성능이 나타났으나， 열수처리한（ 함침된 !3는 프로펜과톨루엔의 흡착력이 저하되었다.
（ 함침된
Figure imgf000025_0001
산화온도는（ 함침된 !3의 산화온도보다높으며 , 이러한산화온도는벌크（ 0의 산화온도와비슷하다（도 15（32）, 2） 및 （02））. 배출프로파일（도 15（32）, 0）2） 및
Figure imgf000025_0002
분석한결과， 탄화수소가 002또는 0）로전환되었다는것을알수있다.
따라서， ^함침된 財의 1묘¾1이미지（도 18）및 XI社）패턴（도 19）을 통하여， 열수처리 후， &:/000은어느정도뺘1 제오라이트구조를유지하지만, /130및 凡_100는쌔1 제오라이트구조가 0（ -크리스토발라이트（0（-
Figure imgf000025_0003
변형되고, 0必입자는보존된다는것을알수있다. 이상으로본발명 내용의 특정한부분을상세히 기술하였는바， 당업계의 통상의 지식을가진자에게있어서 이러한구체적 기술은단지 바람직한실시 양태일뿐이며, 이에 의해본발명의 범위가제한되는것이 아닌점은명백할 것이다. 따라서 본발명의 실질적인범위는첨부된청구항들과그것들의
등가물에 의하여 정의된다고할것이다.

Claims

2019/132482 1»（：1^1{2018/016590
【청구의 범위】
【청구항 11
2-1011111크기의 메조기공이 규칙적으로형성된제오라이트입자에 금속 양이온및금속산화물이 함침된것을특징으로하는탄화수소흡착제.
【청구항 2]
제 1항에 있어서, 상기 금속양이온및상기 금속산화물은탄화수소의 흡착및산화에 각각작용하는것을특징으로하는탄화수소흡착제.
【청구항 3】
제 1항에 있어서， 메조기공도（111630 01'0311 ）는메조기공의 부피가 0.01 （페3/§이상이고， 제오라이트의 八\1몰비가 10~200이며, 금속양이온은
제올라이트에 함침될수있는최대중량에 대하여 3~85%의 양으로존재하고, 상기 금속산화물은제올라이트에 함침될수있는최대중량에 대하여 15 97%의 양으로존재하는것을특징으로하는탄화수소흡착제 .
【청구항 4]
제 1항에 있어서， 상기 금속양이온은시， 0·， 00） XI , ， ， II· , , 1선,므山如, ¾, ,（ , V, ½, 1法, 및 로구성된군에서 선택되는것을 특징으로하는탄화수소흡착제.
【청구항 5】
제 1항에 있어서， 상기 금속산화물은시， （노, 此, 00 , II , ， , 11·， 아，
Figure imgf000026_0001
산화물인 것을특징으로하는탄화수소흡착제.
【청구항 6]
Figure imgf000026_0002
제오라이트인 것을특징으로하는탄화수소흡착제. 2019/132482 1»（：1^1{2018/016590
【청구항 7】
2-1011111크기의 메조기공이 규칙적으로형성된제오라이트입자를금속 함유용액에 첨가하여 금속양이온및금속산화물을제오라이트입자에 함침시키는것을특징으로하는탄화수소흡착제의 제조방법.
【청구항 8]
저 17항에 있어서， 제오라이트입자의 합성 전구체용액은 1 02 : X
Figure imgf000027_0001
0~3.9）의 몰비로구성된것을특징으로하는탄화수소흡착제의 제조방법.
【청구항 9]
Figure imgf000027_0002
특징으로하는탄화수소톱착제의 제조방법 .
【청구항 10】
제 7항에 있어서， 상기 금속산화물은시， ， 00 > ， I ， II·，
Figure imgf000027_0003
요山 （1，如, ¾, ,（ , V, ½， 1 ,社및 0로구성된군에서 선택된금속의 산화물인것을특징으로하는탄화수소흡착제의 제조방법.
【청구항 11】
제 8항에 있어서 , 상기 제오라이트입자의 합성 전구체용액에서 에탄올과 물의 함량에 따라메조기공도가변하는것을특징으로하는탄화수소흡착제의 제조방법.
【청구항 12】
제 8항에 있어서， 상기 제오라이트입자의 합성 전구체용액에서 :시의 몰비가 5~500인 것을특징으로하는탄화수소흡착제의 제조방법. 2019/132482 1»（：1^1{2018/016590
【청구항 13】
제 1항의 탄화수소흡착제를이용한것을특징으로하는탄화수소의 흡착방법 .
【청구항 14】
제 13항에 있어서, 상기 탄화수소는프로펜， 톨루엔， 에탄， 에텐， 프로판， 벤젠, 자일렌， 에틸렌， 2 -메틸부탄， 포름알데히드, 스틸렌및 아세트알데히드로 구성된군에서 선택되는것을특징으로하는탄화수소의 흡착방법 .
PCT/KR2018/016590 2017-12-29 2018-12-24 규칙적인 메조 기공을 가진 제오라이트 입자에 금속이 함침된 탄화수소 흡착제 및 그 제조방법 WO2019132482A1 (ko)

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ZHANG, XIUEYI ET AL.: "SYNTHESIS OF SELF-PILLARED ZEOLITE NANOSHEETS BY REOETITIVE BRANCHING", SCINECE, vol. 336, no. 6089, 29 June 2012 (2012-06-29), pages 1684 - 1687, XP055358363 *

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JP2022083428A (ja) * 2020-11-24 2022-06-03 コリア ユニバーシティ リサーチ アンド ビジネス ファウンデーション 陽イオンの種類を制御したゼオライトを含む炭化水素吸脱着複合体およびその製造方法

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