KR970025709A - Platinum-supported silicoaluminophosphate-34 (SAPO-34) -based catalyst, preparation method thereof and denitrification method of nitrogen oxide using the same - Google Patents

Platinum-supported silicoaluminophosphate-34 (SAPO-34) -based catalyst, preparation method thereof and denitrification method of nitrogen oxide using the same Download PDF

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KR970025709A
KR970025709A KR1019950039172A KR19950039172A KR970025709A KR 970025709 A KR970025709 A KR 970025709A KR 1019950039172 A KR1019950039172 A KR 1019950039172A KR 19950039172 A KR19950039172 A KR 19950039172A KR 970025709 A KR970025709 A KR 970025709A
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South Korea
Prior art keywords
platinum
sapo
molecular sieve
nitrogen oxide
nitrogen
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KR1019950039172A
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Korean (ko)
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KR0150113B1 (en
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홍석봉
우주만
김선진
이중기
박달근
어용선
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김은영
한국과학기술연구원
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    • 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
    • B01J29/00—Catalysts comprising molecular sieves
    • B01J29/82—Phosphates
    • B01J29/84—Aluminophosphates containing other elements, e.g. metals, boron
    • B01J29/85—Silicoaluminophosphates [SAPO compounds]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8621—Removing nitrogen compounds
    • B01D53/8625—Nitrogen oxides
    • B01D53/8628—Processes characterised by a specific catalyst
    • 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
    • B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
    • 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
    • B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
    • B01J37/0027—Powdering
    • 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
    • B01J37/08—Heat treatment

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Catalysts (AREA)

Abstract

본 발명은 배연 가스 중에 포함된 유해 가스 중 질소 산화물을 제거하는데 유용한, 백금(Pt) 또는 백금과 다른 금속(예, 구리, 니켈, 코발트)이 공침된 실리로알루미노포스페이트-34(SAPO-34)계 분자체 촉매 및 그의 제조 방법 및 그를 이용한 질소 산화물의 탈질 방법에 관한 것이다.The present invention relates to siloaluminophosphate-34 (SAPO-34) in which platinum (Pt) or platinum and other metals (e.g., copper, nickel, cobalt) are co-precipitated, which are useful for removing nitrogen oxides from harmful gases contained in flue gas. The present invention relates to a molecular sieve catalyst, a method for producing the same, and a method for denitrifying nitrogen oxide using the same.

본 발명의 백금이 담지된 SAPO-34계 촉매는 SAPO-34분자체에 백금 화합물 또는 백금과 다른 금속 화합물(Me=구리, 니켈, 코발트)을 물리적으로 균일하게 혼합한 후 압력을 가하여 두께 약 1mm의 원판으로 만든 후, 이를 작은 조각으로 분쇄하고 산소를 유입하면서 숭온시킨 다음 소성시켜 얻는다.Platinum-supported SAPO-34 catalyst of the present invention is about 1mm thick by physically and uniformly mixing the platinum compound or platinum and other metal compounds (Me = copper, nickel, cobalt) to SAPO-34 molecular sieve After it is made into a disc of, it is crushed into small pieces and obtained by sacrificing oxygen inflow and then calcining.

본 발명의 방법으로 제조된 촉매는 종래의 제올라이트계의 촉매에 비해서 열안정성이 높고, 수증기와 산소에 의해서도 활성이 잃지 않는 우수한 특성을 나타내므로 질소 산화물 제거에서 유용하다.The catalyst prepared by the method of the present invention is useful in the removal of nitrogen oxides because it exhibits higher thermal stability and superior properties that do not lose activity even by water vapor and oxygen, compared to conventional zeolite catalysts.

Description

백금이 담지된 실리코알루미노포스페이트-34(SAPO-34)계 촉매, 그의 제조 방법 및 그를 이용한 질소 산화물의 탈질 방법Platinum-supported silicoaluminophosphate-34 (SAPO-34) -based catalyst, preparation method thereof, and denitrification method of nitrogen oxide using the same

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims (4)

골격 구조가 0.5Al2O3:0.5P2O5:xSio2(x=0.02~0.2)인 H-SAPO-34 분자체에 0.01∼5.0중량%의 백금(Pt), 또는 0.01~5.0중량%의 백금(Pt)과 함께 구리, 니켈, 코발트로부터 선택된 다른 금속이 공침되어 있는 것을 특징으로 하는 SAPO-34계 질소 산화물 전환 촉매.0.01-5.0% by weight of platinum (Pt) or 0.01-5.0% by weight in H-SAPO-34 molecular sieve having a skeleton structure of 0.5Al 2 O 3 : 0.5P 2 O 5 : xSio 2 (x = 0.02 to 0.2) The SAPO-34 type nitrogen oxide conversion catalyst characterized by co-precipitation of another metal selected from copper, nickel, and cobalt with platinum (Pt). 분자체 골격 내의 SiO2성분이 0.02∼0.2몰인 SAPO-34 분자체를 제조하고, 이 분자체를 550℃에서 산소 유입하에 소성하여 수화시킨 다음, 수화된 분자체에 이 분자체를 기준으로 하여 0.01~5.0중량%의 백금 화합물 또는 0.01∼5.0중량%의 백금과 구리, 니켈, 코발트로부터 선택된 다른 금속의 화할물을 첨가하여 균질하게 혼합하고, 이 혼합물을 압력하에 원판으로 만들고 이를 다시 분쇄하여 석영관에 넣고 산소를 유입하면서 분당 2℃씩 승온시킨 다음 최종 소성시키는 것을 특징으로 하는 제1항 기재의 SAPO-34계 질소 산화물 전환 촉매의 제조 방법.A SAPO-34 molecular sieve having 0.02 to 0.2 mol of SiO 2 component in the molecular sieve skeleton was prepared, and the molecular sieve was calcined by hydration by sintering under oxygen inflow at 550 ° C., and then 0.01 0.01 based on this molecular sieve to the hydrated molecular sieve. ~ 5.0% by weight of platinum compound or 0.01 to 5.0% by weight of platinum and other metal compounds selected from copper, nickel, and cobalt are added and mixed homogeneously, the mixture is made into a disk under pressure and crushed again to form a quartz tube A method for producing the SAPO-34-based nitrogen oxide conversion catalyst according to claim 1, wherein the temperature is increased by 2 ° C. per minute while introducing oxygen and finally calcined. 제2항에 있어서, 최종 소성은 400∼800℃에서 수행되는 것인 방법.The process of claim 2, wherein the final firing is carried out at 400 to 800 ° C. 4. 온도 200∼600℃, 산소 농도 0∼10% 및 수증기 농도 0~13%의 조건하에 프로필렌과 일산화질소의 비가 1~4인 배연 가스를 사용하여 질소 산화물을 제1항 기재의 질소 산화물 전환 촉매와 접촉시켜 질소로 전환시킴을 특징으로 하는 질소 산화물의 탈질 방법.Nitrogen oxides were mixed with the nitrogen oxide conversion catalyst according to claim 1 using a flue gas having a ratio of 1 to 4 of propylene and nitrogen monoxide under conditions of a temperature of 200 to 600 ° C., an oxygen concentration of 0 to 10%, and a vapor concentration of 0 to 13%. A method for denitrification of nitrogen oxides, characterized in that it is converted to nitrogen by contact. ※ 참고사항:최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950039172A 1995-11-01 1995-11-01 Platinum deposited silicoaluminophosphate-34(sapo-34)catalysts, their preparation and catalytic reduction of nitrogen oxides KR0150113B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040033900A (en) * 2002-10-16 2004-04-28 주식회사 포스코 Platinized photocatalyst for conversion of ammonia in water to dinitrogen and method of removal ammonia using same

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109225319A (en) * 2018-11-12 2019-01-18 吉林大学 Pt/SAPO-34 molecular sieve catalyst and preparation method thereof for toluene catalytic oxidation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040033900A (en) * 2002-10-16 2004-04-28 주식회사 포스코 Platinized photocatalyst for conversion of ammonia in water to dinitrogen and method of removal ammonia using same

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