CN107486224A - A kind of ultralow solid mercury catalyst of high catalytic conversion and preparation method thereof - Google Patents

A kind of ultralow solid mercury catalyst of high catalytic conversion and preparation method thereof Download PDF

Info

Publication number
CN107486224A
CN107486224A CN201710756791.4A CN201710756791A CN107486224A CN 107486224 A CN107486224 A CN 107486224A CN 201710756791 A CN201710756791 A CN 201710756791A CN 107486224 A CN107486224 A CN 107486224A
Authority
CN
China
Prior art keywords
product
catalyst
catalytic conversion
high catalytic
parts
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201710756791.4A
Other languages
Chinese (zh)
Inventor
李武斌
张彬
王良栋
何家明
梁丹全
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guizhou Zhongli Technology Environment Protection Co Ltd
Original Assignee
Guizhou Zhongli Technology Environment Protection Co Ltd
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 Guizhou Zhongli Technology Environment Protection Co Ltd filed Critical Guizhou Zhongli Technology Environment Protection Co Ltd
Priority to CN201710756791.4A priority Critical patent/CN107486224A/en
Publication of CN107486224A publication Critical patent/CN107486224A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/06—Halogens; Compounds thereof
    • B01J27/138—Halogens; Compounds thereof with alkaline earth metals, magnesium, beryllium, zinc, cadmium or mercury
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/024—Multiple impregnation or coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
    • B01J37/341—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation
    • B01J37/343—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation of ultrasonic wave energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/34—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation
    • B01J37/341—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation
    • B01J37/344—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation of electromagnetic wave energy
    • B01J37/346—Irradiation by, or application of, electric, magnetic or wave energy, e.g. ultrasonic waves ; Ionic sputtering; Flame or plasma spraying; Particle radiation making use of electric or magnetic fields, wave energy or particle radiation of electromagnetic wave energy of microwave energy
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/07—Preparation of halogenated hydrocarbons by addition of hydrogen halides
    • C07C17/08—Preparation of halogenated hydrocarbons by addition of hydrogen halides to unsaturated hydrocarbons

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Toxicology (AREA)
  • Electromagnetism (AREA)
  • Catalysts (AREA)

Abstract

The invention discloses ultralow solid mercury catalyst of a kind of high catalytic conversion and preparation method thereof, the catalyst is with H2O2Coal activated carbon after oxidation is carrier, with HgCl2For main catalyst component, InCl3、ScCl3And YCl3For catalyst aid, KCl is solid mercurial, and hydrochloric acid is competitive adsorbate, is prepared using the method for ultrasonic disperse step impregnation microwave drying.The catalyst of the present invention has the advantages of Hg chloride content is low, effective Hg chloride content is high, decentralization is high, high, the solid mercury effect of catalytic conversion is good, cost is low.

Description

A kind of ultralow solid mercury catalyst of high catalytic conversion and preparation method thereof
Technical field
The present invention relates to a kind of chemical catalyst, the ultralow solid mercury catalyst and its system of particularly a kind of high catalytic conversion Preparation Method.
Background technology
In January, 2011, Environmental Protection Department issue《Prevent on strengthening carbide production polyvinyl chloride and relevant industries mercury pollution Control the notice of work》, propose to reach 100% to the end of the year 2015, generated by polyvinyl chloride by calcium carbide industry low mercury catalyst popularity rate；2013 October 10, sponsored what Japan held by United Nations Environment Programme《Minamata pact》In diplomatic full powers conference, including in The per pro of 92 countries and regions including state《Minamata pact》, control and reduce hand in hand global mercury emissions.Therefore, it is ultralow Gu development and mercury emission reduction of the research and development of mercury catalyst for PVC industries are all significant.
Low-mercury catalyst（4-6.5%）In preparation process, due to the reproducibilities such as carbonyl, aldehyde radical on carrier active carbon be present Functional group, and the bivalent mercury of mercury chloride has oxidisability, and redox reaction occurs in dipping process, causes 10%-40%'s Mercury chloride is converted into calogreen, calogreen and catalytically inactive, causes the partial oxidation mercury in low-mercury catalyst to waste, does not have Play catalytic action.National standard（GB/T 31530-2015）VCM synthesis content of mercury chloride as defined in low mercury catalyst is 4-6.5%, due to the oxidation using hydrochloric acid and nitric acid during actual analysis, and calogreen is oxidized to mercury chloride, failed Analyze real Hg chloride content in low-mercury catalyst.Therefore, existing low-mercury catalyst has that Hg chloride content is higher, has Imitate the shortcomings that Hg chloride content is relatively low, decentralization is low, catalytic conversion is low, solid mercury effect is poor, cost is higher.
To solve problem above, the present invention uses H2O2Coal activated carbon after oxidation is carrier, HgCl2Based on be catalyzed into Point, InCl3、ScCl3And YCl3For catalyst aid, KCl is solid mercurial, and hydrochloric acid is competitive adsorbate, and using ultrasonic disperse point The method of step dipping-microwave drying prepares the ultralow solid mercury catalyst of high catalytic conversion.
The content of the invention
It is an object of the present invention to provide ultralow solid mercury catalyst of a kind of high catalytic conversion and preparation method thereof.The present invention Catalyst have Hg chloride content is low, effective Hg chloride content is high, decentralization is high, high, the solid mercury effect of catalytic conversion is good, into The advantages of this is low.
Technical scheme：A kind of ultralow solid mercury catalyst of high catalytic conversion, the catalyst use HgCl2、 InCl3、ScCl3、YCl3, KCl and absorbent charcoal carrier be made.
In a kind of ultralow solid mercury catalyst of foregoing high catalytic conversion, the catalyst, by weight, every 100 Contain HgCl in part21-4 parts, InCl31.6-6.52 part, ScCl30.56-2.24 parts, YCl30.72-2.88 parts, KCl0.55- 2.2 parts, surplus is absorbent charcoal carrier.
The absorbent charcoal carrier, it is to use H in a kind of ultralow solid mercury catalyst of foregoing high catalytic conversion2O2In pH=3 Aqueous hydrochloric acid solution in oxidation coal activated carbon carrier be made.
In a kind of ultralow solid mercury catalyst of foregoing high catalytic conversion, the HgCl2、InCl3、ScCl3、YCl3And The amount ratio of KCl material is 1:2:1:1:2.
According to a kind of preparation method of the ultralow solid mercury catalyst of the foregoing high catalytic conversion of right, it is characterised in that： Prepare according to the following steps：
（a）By HgCl2、InCl3、ScCl3、YCl3Added with KCl in the aqueous hydrochloric acid solution of pH=1, be well mixed, obtain A product；
（b）Absorbent charcoal carrier is impregnated using A product, obtains B product；
（c）B product are dried, hydrochloric acid is volatilized, obtain the ultralow solid mercury catalyst of high catalytic conversion.
In foregoing preparation method, the step（b）It is middle that absorbent charcoal carrier is impregnated using A product, it is to divide equally A product For 2 ~ 4 deciles, substep ultrasonic immersing is carried out under 80 DEG C of vacuum condition.
In foregoing preparation method, the step（c）In B product are dried, be to use microwave drying, dry to B product Middle moisture is less than 0.3%.
Compared with prior art, 1. the catalyst Hg chloride content is relatively low, and cost is relatively low, due to from H2O2After oxidation Coal activated carbon is carrier, reproducibility functional group in premature oxidation activated carbon, avoids the reduction of mercury chloride in dipping process Reaction, the content of calogreen is relatively low, improves effective Hg chloride content, improves catalytic conversion；
2. use catalyst aid InCl3、ScCl3、YCl3, the cloud density around mercury element is added, strengthens the suction to HCl Attached ability, suppress HgCl2It is reduced to Hg2Cl2With simple substance Hg, while catalytic conversion is improved；
Gu 3. mercurial KCl addition, KCl and HgCl2Form tetrachloro and close mercury acid value complex, reduce the distillation of mercury chloride, prolong Service life is grown, having built the intermolecular active force of mercury chloride less adds decentralization, improves catalytic conversion；
4. in dipping process, it is used as competitive adsorbate by adding hydrochloric acid, the distributing homogeneity of active component can be improved, improved Decentralization, improve catalytic conversion；
5. ultrasonic step impregnation and progress microwave drying, avoid the reunion and migration of active component in preparation process, favorably It is higher in distribution of the active component on carrier, decentralization.
⑥HgCl2、InCl3、ScCl3、YCl3, KCl material amount ratio be 1:2:1:1:The 2 ultralow solid mercury being prepared Catalyst, its active component particle diameter is smaller, and decentralization is higher, and catalytic conversion is higher.
In summary, catalyst of the invention has that Hg chloride content is low, effective Hg chloride content is high, decentralization is high, urges Change high conversion rate, consolidate the advantages of mercury effect is good, cost is low.
Embodiment
With reference to embodiment, the present invention is further illustrated, but is not intended as the foundation limited the present invention.
Embodiment 1.A kind of ultralow solid mercury catalyst of high catalytic conversion, the catalyst, by weight, every 100 Contain HgCl in part product24 parts, InCl36.52 parts, ScCl32.23 parts, YCl32.88 parts, KCl2.2 parts, surplus are activated carbon Carrier.
The absorbent charcoal carrier, it is to use H2O2Coal activated carbon carrier is aoxidized in the aqueous hydrochloric acid solution of pH=3 to be made.
The preparation method of the ultralow solid mercury catalyst of high catalytic conversion, is prepared according to the following steps：
（a）By HgCl2、InCl3、ScCl3、YCl3Added with KCl in the aqueous hydrochloric acid solution of pH=1, be well mixed, obtain A product；
（b）A product are divided into 4 deciles, 4 step impregnations are carried out to absorbent charcoal carrier under 80 DEG C of vacuum condition using A product, Obtain B product；
（c）Microwave drying is carried out to B product, hydrochloric acid is volatilized, it is 0.26% to dry into B product moisture, obtains high catalytic conversion Ultralow solid mercury catalyst.
With the ultralow solid mercury catalyst of high catalytic conversion made from the raw material of this parts by weight, for acetylene and hydrogen chloride It is 20h in acetylene space flow speed during addition reaction-1, acetylene is 1 with hydrogen chloride molecular proportion：Under conditions of 1.15, its catalysis is determined Conversion ratio is 99.5%.
Embodiment 2.A kind of ultralow solid mercury catalyst of high catalytic conversion, the catalyst, by weight, every 100 Contain HgCl in part product23 parts, InCl34.89 parts, ScCl31.67 parts, YCl32.16 parts, KCl1.65 parts, surplus are activated carbon Carrier.
The absorbent charcoal carrier, it is to use H2O2Coal activated carbon carrier is aoxidized in the aqueous hydrochloric acid solution of pH=3 to be made.
The preparation method of the ultralow solid mercury catalyst of high catalytic conversion, is prepared according to the following steps：
（a）By HgCl2、InCl3、ScCl3、YCl3Added with KCl in the aqueous hydrochloric acid solution of pH=1, be well mixed, obtain A product；
（b）A product are divided into 3 deciles, 3 step impregnations are carried out to absorbent charcoal carrier under 80 DEG C of vacuum condition using A product, Obtain B product；
（c）Microwave drying is carried out to B product, hydrochloric acid is volatilized, it is 0.24% to dry into B product moisture, obtains high catalytic conversion Ultralow solid mercury catalyst.
With the ultralow solid mercury catalyst of high catalytic conversion made from the raw material of this parts by weight, for acetylene and hydrogen chloride It is 20h in acetylene space flow speed during addition reaction-1, acetylene is 1 with hydrogen chloride molecular proportion：Under conditions of 1.15, its catalysis is determined Conversion ratio is 99%.
Embodiment 3.A kind of ultralow solid mercury catalyst of high catalytic conversion, the catalyst, by weight, every 100 Contain HgCl in part product22 parts, InCl33.26 parts, ScCl31.12 parts, YCl31.44 parts, KCl1.1 parts, surplus are activated carbon Carrier.
The absorbent charcoal carrier, it is to use H2O2Coal activated carbon carrier is aoxidized in the aqueous hydrochloric acid solution of pH=3 to be made.
（a）By HgCl2、InCl3、ScCl3、YCl3Added with KCl in the aqueous hydrochloric acid solution of pH=1, be well mixed, obtain A product；
（b）A product are divided into 2 deciles, 2 step impregnations are carried out to absorbent charcoal carrier under 80 DEG C of vacuum condition using A product, Obtain B product；
（c）Microwave drying is carried out to B product, hydrochloric acid is volatilized, it is 0.25% to dry into B product moisture, obtains high catalytic conversion Ultralow solid mercury catalyst.
With the ultralow solid mercury catalyst of high catalytic conversion made from the raw material of this parts by weight, for acetylene and hydrogen chloride It is 20h in acetylene space flow speed during addition reaction-1, acetylene is 1 with hydrogen chloride molecular proportion：Under conditions of 1.15, its catalysis is determined Conversion ratio is 99.5%.

Claims (7)

  1. A kind of 1. ultralow solid mercury catalyst of high catalytic conversion, it is characterised in that：The catalyst uses HgCl2、InCl3、 ScCl3、YCl3, KCl and absorbent charcoal carrier be made.
  2. A kind of 2. ultralow solid mercury catalyst of high catalytic conversion according to claim 1, it is characterised in that：The catalysis Agent, by weight, contain HgCl in every 100 parts21-4 parts, InCl31.6-6.52 part, ScCl30.56-2.24 parts, YCl30.72-2.88 parts, KCl0.55-2.2 parts, surplus are absorbent charcoal carrier.
  3. A kind of 3. ultralow solid mercury catalyst of high catalytic conversion according to claim 1 or 2, it is characterised in that：It is described Absorbent charcoal carrier, it is to use H2O2Coal activated carbon carrier is aoxidized in the aqueous hydrochloric acid solution of pH=3 to be made.
  4. A kind of 4. ultralow solid mercury catalyst of high catalytic conversion according to claim 1 or 2, it is characterised in that：It is described HgCl2、InCl3、ScCl3、YCl3And the amount ratio of KCl material is 1:2:1:1:2.
  5. 5. the system of the ultralow solid mercury catalyst according to a kind of high catalytic conversion described in Claims 1-4 any claim Preparation Method, it is characterised in that：Prepare according to the following steps：
    （a）By HgCl2、InCl3、ScCl3、YCl3Added with KCl in the aqueous hydrochloric acid solution of pH=1, be well mixed, obtain A product；
    （b）Absorbent charcoal carrier is impregnated using A product, obtains B product；
    （c）B product are dried, hydrochloric acid is volatilized, obtain catalyst.
  6. 6. preparation method according to claim 5, it is characterised in that：The step（b）It is middle to use A product to absorbent charcoal carrier Impregnated, be that A product are divided into 2 ~ 4 deciles, substep ultrasonic immersing is carried out under 80 DEG C of vacuum condition.
  7. 7. preparation method according to claim 5, it is characterised in that：The step（c）In B product are dried, be to adopt With microwave drying, dry into B product moisture and be less than 0.3%.
CN201710756791.4A 2017-08-29 2017-08-29 A kind of ultralow solid mercury catalyst of high catalytic conversion and preparation method thereof Pending CN107486224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710756791.4A CN107486224A (en) 2017-08-29 2017-08-29 A kind of ultralow solid mercury catalyst of high catalytic conversion and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710756791.4A CN107486224A (en) 2017-08-29 2017-08-29 A kind of ultralow solid mercury catalyst of high catalytic conversion and preparation method thereof

Publications (1)

Publication Number Publication Date
CN107486224A true CN107486224A (en) 2017-12-19

Family

ID=60651125

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710756791.4A Pending CN107486224A (en) 2017-08-29 2017-08-29 A kind of ultralow solid mercury catalyst of high catalytic conversion and preparation method thereof

Country Status (1)

Country Link
CN (1) CN107486224A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108295876A (en) * 2018-01-30 2018-07-20 浙江工业大学 A kind of preparation method of low-mercury catalyst and application

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102489306A (en) * 2011-11-25 2012-06-13 贵州大学 Low-mercury catalyst for synthesizing vinyl chloride
WO2012084643A2 (en) * 2010-12-22 2012-06-28 Solvay Sa Catalytic system and its use for the manufacture of vinyl chloride by hydrochlorination of acetylene
CN104588068A (en) * 2015-01-09 2015-05-06 贵州大龙银星汞业有限责任公司 Method for preparing novel acetylene hydrochlorinated nano catalyst by virtue of ultrasonic dispersion process and novel nano catalyst
CN105032453A (en) * 2015-06-29 2015-11-11 贵州大龙银星汞业有限责任公司 Acetylene-hydrochlorinated novel low-solid mercury catalyst and preparation method thereof
CN105080581A (en) * 2015-09-11 2015-11-25 浙江工业大学 Composite low solid mercury catalyst used for acetylene hydrochlorination and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012084643A2 (en) * 2010-12-22 2012-06-28 Solvay Sa Catalytic system and its use for the manufacture of vinyl chloride by hydrochlorination of acetylene
CN102489306A (en) * 2011-11-25 2012-06-13 贵州大学 Low-mercury catalyst for synthesizing vinyl chloride
CN104588068A (en) * 2015-01-09 2015-05-06 贵州大龙银星汞业有限责任公司 Method for preparing novel acetylene hydrochlorinated nano catalyst by virtue of ultrasonic dispersion process and novel nano catalyst
CN105032453A (en) * 2015-06-29 2015-11-11 贵州大龙银星汞业有限责任公司 Acetylene-hydrochlorinated novel low-solid mercury catalyst and preparation method thereof
CN105080581A (en) * 2015-09-11 2015-11-25 浙江工业大学 Composite low solid mercury catalyst used for acetylene hydrochlorination and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JIA ZHAO,ET AL: "Activated carbon supported ternary gold-cesium(I)-indium(III) catalyst for the hydrochlorination of acetylene", 《CATALYSIS SCIENCE & TECHNOLOGY》 *
韩伟杰等: "球形活性碳的氧化改性及其在乙炔氢氯化反应中的应用", 《石河子大学学报(自然科学版)》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108295876A (en) * 2018-01-30 2018-07-20 浙江工业大学 A kind of preparation method of low-mercury catalyst and application

Similar Documents

Publication Publication Date Title
CN106334549B (en) It is a kind of for the composite porous and preparation method thereof of purifying formaldehyde and TVOCs
CN106311202A (en) Preparation method of sludge char catalyst as well as catalyst and application
CN104084238A (en) ZIF-8 film-coated Pd/ZnO core-shell catalyst and preparation method thereof
US11369943B2 (en) Starch-based carbon composite and use thereof in selective and efficient adsorption of mercury ion and methylene blue
CN103769085A (en) Preparation method of catalyst for catalytic combustion
CN108295876A (en) A kind of preparation method of low-mercury catalyst and application
CN105080581A (en) Composite low solid mercury catalyst used for acetylene hydrochlorination and preparation method thereof
CN103785401A (en) Preparation method of hydrodemetalization catalyst for residuum
CN105396552A (en) Molded biological carbon and preparation method thereof
CN107913677A (en) A kind of nanometer heavy metal wastewater thereby ionic adsorption microballoon and preparation method thereof
CN104588068B (en) Method for preparing novel acetylene hydrochlorinated nano catalyst by virtue of ultrasonic dispersion process and novel nano catalyst
CN105080574B (en) A kind of highly acid multiplex catalyst for acetylene hydrochlorination reaction
CN107486224A (en) A kind of ultralow solid mercury catalyst of high catalytic conversion and preparation method thereof
CN102838143A (en) Preparation method for spherical alumina
CN104785238A (en) Hg-La catalyst for acetylene hydrochlorination, and preparation method and application thereof
CN105712461A (en) Catalytic wet oxidation method for acrylic acid and ester wastewater
CN107442175A (en) Low solid mercury catalyst of a kind of high degree of dispersion of acetylene hydrochlorination and preparation method thereof
CN105032453A (en) Acetylene-hydrochlorinated novel low-solid mercury catalyst and preparation method thereof
CN105597680B (en) A kind of kernel is core-shell type granular activated carbon of powder and preparation method thereof
CN101844074B (en) Method for preparing activated carbon used for flue gas demercuration
CN104383920B (en) The preparation method of a kind of MnOOH/Ag nano composite material and application thereof
CN106732398A (en) A kind of method of modifying for improving charcoal ball absorbent charcoal composite material toluene adsorbance
CN114558558B (en) Double-crosslinked hydrogel doped with attapulgite as well as preparation method and application thereof
CN110433868A (en) A kind of aerogel composite and preparation method thereof for formaldehyde catalytic decomposition
CN107486232A (en) A kind of high degree of dispersion catalyst without mercury of acetylene hydrochlorination and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20171219