KR910004250A - 메타크릴산 제조용 촉매 - Google Patents

메타크릴산 제조용 촉매 Download PDF

Info

Publication number
KR910004250A
KR910004250A KR1019900013388A KR900013388A KR910004250A KR 910004250 A KR910004250 A KR 910004250A KR 1019900013388 A KR1019900013388 A KR 1019900013388A KR 900013388 A KR900013388 A KR 900013388A KR 910004250 A KR910004250 A KR 910004250A
Authority
KR
South Korea
Prior art keywords
catalyst
methacrylic acid
inert carrier
pore diameter
active material
Prior art date
Application number
KR1019900013388A
Other languages
English (en)
Other versions
KR950004758B1 (ko
Inventor
이꾸오 구리모또
히데또 하시바
히데오 오노데라
유끼오 아오끼
Original Assignee
다나까 소오죠오
닛뽕쇼꾸바이가가꾸고오교 가부시끼가이샤
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26515919&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=KR910004250(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP1220380A external-priority patent/JP2695480B2/ja
Priority claimed from JP2206857A external-priority patent/JP2994706B2/ja
Application filed by 다나까 소오죠오, 닛뽕쇼꾸바이가가꾸고오교 가부시끼가이샤 filed Critical 다나까 소오죠오
Publication of KR910004250A publication Critical patent/KR910004250A/ko
Application granted granted Critical
Publication of KR950004758B1 publication Critical patent/KR950004758B1/ko

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
    • B01J27/14—Phosphorus; Compounds thereof
    • B01J27/186—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • 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
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/002—Mixed oxides other than spinels, e.g. perovskite
    • 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
    • B01J27/14—Phosphorus; Compounds thereof
    • B01J27/186—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J27/188—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with chromium, molybdenum, tungsten or polonium
    • B01J27/19—Molybdenum
    • 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
    • B01J27/14—Phosphorus; Compounds thereof
    • B01J27/186—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J27/188—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with chromium, molybdenum, tungsten or polonium
    • B01J27/19—Molybdenum
    • B01J27/192—Molybdenum with bismuth
    • 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
    • B01J27/14—Phosphorus; Compounds thereof
    • B01J27/186—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J27/195—Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with vanadium, niobium or tantalum
    • B01J27/198—Vanadium
    • B01J27/199—Vanadium with chromium, molybdenum, tungsten or polonium
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/23—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of oxygen-containing groups to carboxyl groups
    • C07C51/235—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of oxygen-containing groups to carboxyl groups of —CHO groups or primary alcohol groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/25—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
    • C07C51/252—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring of propene, butenes, acrolein or methacrolein
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/347—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups
    • C07C51/377—Preparation of carboxylic acids or their salts, halides or anhydrides by reactions not involving formation of carboxyl groups by splitting-off hydrogen or functional groups; by hydrogenolysis of functional groups
    • 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
    • B01J2523/00—Constitutive chemical elements of heterogeneous catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

내용 없음.

Description

메타크릴산 제조용 촉매
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (6)

  1. 비활성 담체 및 하기식(1)로 표시되는 산화물로 이루어지며, 식(1)의 산화물의 원소성분을 함유하는 화합물을 혼합하고, 필요에 따라 가열하여 슬러리 또는 용액을 제조하여 비활성 담체 상에 분무하고, 침착된 슬러리 또는 용액을 갖는 비활성 담체를 석회화시킴으로써 형성되는, 담체 상에 침착된 촉매 활성 물질 층으로 구성되는 메타크릴산 제조용 촉매.
    [상기식중, Mo는 몰리브덴을 나타내고, P는 인을 나타내며, A는 비소, 안티몬, 게르마늄, 비스무트, 지르코늄, 세륨 및 셀렌에서 선택된 적어도 하나의 원소를 나타내고, B는 구리, 철, 크롬, 니켈, 망간, 코발트, 주석, 은, 아연, 팔라듐, 로듐 및 텔루트에서 선택된 적어도 하나의 원소를 나타내며, O는 산소를 나타내고, D는 알칼리금속, 알칼리토금속 및 탈륨에서 선택된 적어도 하나의 원소를 나타내며, O는 산소를 나타내고, a,b,c,d,e,f 및 x는 각각 Mo,P,A,C,D 및 O의 원자비를 나타내며, a=12, b=0.5∼4, c=0∼5, d=0∼3, e=0∼4,f=0.01∼4일 경우 x는 이들 원소의 산화수에 의해 결정되는 수치이다.
  2. 제 1항에 있어서, 촉매활성물질층이 하기 특성을 갖는 메타크릴산 제조용 촉매, 비표면적: 1∼20㎡/g, 공극부피 : 0.1∼1㎖/g, 공극직경분포 : 20∼70%, 0.5 내지 1미만 ㎛의 공극직경 :20% 이하0.1 내지 0.5 미만 ㎛의 공극직경:20∼70%(총 공극부피에 대한 부피비율)
  3. 촉매활성물질층이 상이한 층을 갖는 적어도 두 층으로 이루어진 다층구조인 메타크릴산 제조용 촉매.
  4. 제 3항에 있어서, 제1항에 기재된 식(1)의 산화물의 원소성분을 함유하는 화합물을 혼합하고, 필요에 따라가열하여 슬러리 또는 용액을 제조하고, 비활성 담체 상에 슬러리 또는 용액을 분무시 상이한 조성을 갖는 2이상의 슬러리 또는 용액을 미리 제조한 후 비활성 담체상에 연속적으로 분무함으로써 다층구조인 촉매활성물질층이 형성되는 메타크릴산 제조용 촉매.
  5. 제 3항에 있어서, 제 1항에 기대된 식(I)의 산화물의 원소성분을 함유하는 화합물을 혼합하고, 필요에 따라 가열하여 슬러리 또는 용액을 제조하고, 비활성 담체 상에 슬러리 또는 용액을 분무시 상이한 조성을 갖는 2 이상의 슬러리 또는 용액을 미리 제조한 후 비활성 담체상에 연속하여 반복적으로 분무함으로써 다층구조인 촉매활성 물질 층이 형성되는 메타크릴산 제조용 촉매.
  6. 제 3항에 있어서, 다층구조인 축매활성물질층이 하기 특성을 갖는 메타크릴산 제조용 촉매, 비표면적 :1∼20㎡/g, 공극부피 : 0.1∼1㎖/g, 공극직경분포 :1 내지 10㎛의 공극직경 :20∼70%, 0.5 내지 1미만㎛의 공극직경: 20%이하, 0.1 내지 0.5미만㎛의 공극직경 :20∼70%(총 공극부피에 대한 부피비율)
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900013388A 1989-08-29 1990-08-29 메타크릴산 제조용 촉매 KR950004758B1 (ko)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP1220380A JP2695480B2 (ja) 1989-08-29 1989-08-29 メタクリル酸製造用触媒およびその製造方法
JP1-220380 1989-08-29
JP220,380/89 1989-08-29
JP2206857A JP2994706B2 (ja) 1990-08-06 1990-08-06 メタクリル酸製造用触媒および該触媒を用いたメタクリル酸の製造方法
JP206,857/90 1990-08-06

Publications (2)

Publication Number Publication Date
KR910004250A true KR910004250A (ko) 1991-03-28
KR950004758B1 KR950004758B1 (ko) 1995-05-10

Family

ID=26515919

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900013388A KR950004758B1 (ko) 1989-08-29 1990-08-29 메타크릴산 제조용 촉매

Country Status (4)

Country Link
US (1) US5153162A (ko)
EP (1) EP0415347B2 (ko)
KR (1) KR950004758B1 (ko)
DE (1) DE69013623T3 (ko)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2558036B2 (ja) * 1992-05-29 1996-11-27 株式会社日本触媒 メタクロレインおよび／またはメタクリル酸の製造方法
US5532199A (en) * 1992-06-19 1996-07-02 Mitsubishi Rayon Co., Ltd. Carrier-supported catalyst for the synthesis of unsaturated aldehydes and unsaturated carboxylic acids and process for preparing the same
DE4220859A1 (de) * 1992-06-25 1994-01-05 Basf Ag Multimetalloxidmassen
KR100210642B1 (ko) * 1994-05-31 1999-07-15 겐지 아이다 메타크릴산 제조용촉매 및 이 촉매를 이용한 메타크릴산의 제조방법
US6030920A (en) * 1997-12-24 2000-02-29 Saudi Basic Industries Corporation Catalysts for producing acetic acid from ethane oxidation, processes of making same and method of using same
US6339037B1 (en) * 1999-04-27 2002-01-15 Nippon Shokubai Co. Ltd Catalysts for methacrylic acid production and process for producing methacrylic acid
KR100569632B1 (ko) 1999-05-13 2006-04-10 가부시키가이샤 닛폰 쇼쿠바이 불포화 알데히드 및 불포화 카르복실산을 제조하기 위한촉매 및 이 촉매를 사용하여 불포화 알데히드 및 불포화카르복실산을 제조하기 위한 방법
JP4185217B2 (ja) * 1999-05-25 2008-11-26 株式会社日本触媒 複合酸化物触媒、並びに（メタ）アクロレインおよび（メタ）アクリル酸の製造方法
US6762148B2 (en) * 1999-09-17 2004-07-13 Nippon Kayaku Kabushiki Kaisha Catalyst process of making
US6444845B1 (en) * 2000-04-28 2002-09-03 Saudia Basic Industries Corporation Process for the oxidation of unsaturated aldehydes to produce carboxylic acids using Mo-V based catalysts
US6531631B1 (en) 2000-04-28 2003-03-11 Saudi Basic Industries Corporation Oxidation of ethane to acetic acid and ethylene using molybdenum and vanadium based catalysts
US6337424B1 (en) * 2000-04-28 2002-01-08 Saudi Basic Industries Corporation Catalysts oxidation of lower olefins to unsaturated aldehydes, methods of making and using the same
US6523945B2 (en) 2000-12-06 2003-02-25 Lexmark International, Inc Bubble generator for an ink jet print cartridge
JP3884967B2 (ja) * 2002-02-07 2007-02-21 住友化学株式会社 メタクリル酸の製造方法
US7115776B2 (en) 2002-07-18 2006-10-03 Basf Aktiengesellschaft Heterogeneously catalyzed gas-phase partial oxidation of at least one organic compound
SG136121A1 (en) * 2004-02-10 2007-10-29 Mitsubishi Rayon Co CATALYST FOR PRODUCING α, β-UNSATURATED CARBOXYLIC ACID AND METHOD FOR PREPARATION THEREOF, AND METHOD FOR PRODUCING α, β- UNSATURATED CARBOXYLIC ACID
KR101154764B1 (ko) 2004-02-10 2012-06-18 미츠비시 레이온 가부시키가이샤 α,β-불포화 카복실산 제조용 촉매 및 그의 제조방법, 및α,β-불포화 카복실산의 제조방법
CN100345631C (zh) * 2004-03-25 2007-10-31 株式会社日本触媒 丙烯酸制造用催化剂及使用该催化剂的丙烯酸制造方法
US7378367B2 (en) * 2004-03-25 2008-05-27 Nippon Shokubai Co., Ltd. Catalyst for production of acrylic acid and process for production of acrylic acid using the catalyst
US7446223B2 (en) * 2004-06-04 2008-11-04 Mitsubishi Rayon Co., Ltd. Palladium-containing catalyst and method for producing same
US7732367B2 (en) * 2005-07-25 2010-06-08 Saudi Basic Industries Corporation Catalyst for methacrolein oxidation and method for making and using same
US7851397B2 (en) 2005-07-25 2010-12-14 Saudi Basic Industries Corporation Catalyst for methacrolein oxidation and method for making and using same
US7649112B2 (en) 2005-07-25 2010-01-19 Saudi Basic Industries Corporation Integrated plant for producing 2-ethyl-hexanol and methacrylic acid and a method based thereon
US7649111B2 (en) 2005-07-25 2010-01-19 Saudi Basic Industries Corporation Catalyst for the oxidation of a mixed aldehyde feedstock to methacrylic acid and methods for making and using same
DE102006000996A1 (de) 2006-01-05 2007-07-12 Basf Ag Verfahren der heterogen katalysierten Gasphasen-Partialoxidation wenigstens einer organischen Ausgangsverbindung
EP1734030A1 (de) 2006-01-18 2006-12-20 BASF Aktiengesellschaft Verfahren zum Langzeitbetrieb einer heterogen katalysierten partiellen Gasphasenoxidation einer organischen Ausgangsverbindung
JP5091715B2 (ja) 2007-03-01 2012-12-05 ローム アンド ハース カンパニー 管から固形物を取り外し、抜き出すための装置および方法
CN102046289A (zh) * 2008-06-02 2011-05-04 日本化药株式会社 用于生产不饱和醛和不饱和羧酸的催化剂和方法
US8921257B2 (en) 2011-12-02 2014-12-30 Saudi Basic Industries Corporation Dual function partial oxidation catalyst for propane to acrylic acid conversion
US8722940B2 (en) 2012-03-01 2014-05-13 Saudi Basic Industries Corporation High molybdenum mixed metal oxide catalysts for the production of unsaturated aldehydes from olefins
TWI716835B (zh) 2018-03-23 2021-01-21 日商三菱化學股份有限公司 觸媒
CN109999904B (zh) * 2019-04-29 2022-03-01 陕西延长石油（集团）有限责任公司 一种催化异丁烯或叔丁醇制备2-甲基丙烯醛的催化剂及其制备方法与应用
CN112076786B (zh) * 2020-09-01 2022-11-22 润泰化学（泰兴）有限公司 一种用于催化异丁醛制备甲基丙烯酸的催化剂的制备方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2626887B2 (de) * 1976-06-16 1978-06-29 Basf Ag, 6700 Ludwigshafen Katalysator für die Oxadation von (Methacrolein zu (Meth)Acrylsäure
DE2909670A1 (de) * 1979-03-12 1980-10-02 Basf Ag Verfahren zur herstellung von schalenkatalysatoren
JPS55124734A (en) * 1979-03-22 1980-09-26 Nippon Kayaku Co Ltd Preparation of methacrylic acid
US4547588A (en) * 1979-10-03 1985-10-15 The Halcon Sd Group, Inc. Process for producing methacrylic acid
US4301031A (en) * 1980-08-05 1981-11-17 The Standard Oil Company Methacrolein oxidation catalysts
DE3125062C2 (de) * 1981-06-26 1984-11-22 Degussa Ag, 6000 Frankfurt Verfahren zur Herstellung von abriebfesten Schalenkatalysatoren und Verwendung eines so erhaltenen Katalysators
US4558029A (en) * 1982-09-13 1985-12-10 The Standard Oil Company Antimony-containing C4 oxidation catalysts
JPS59115750A (ja) * 1982-12-22 1984-07-04 Nippon Shokubai Kagaku Kogyo Co Ltd メタクリル酸合成用触媒
JPH0753686B2 (ja) * 1986-10-27 1995-06-07 三菱レイヨン株式会社 メタクリル酸の製造法

Also Published As

Publication number Publication date
EP0415347A3 (en) 1992-02-26
DE69013623T2 (de) 1995-05-24
KR950004758B1 (ko) 1995-05-10
EP0415347B2 (en) 2002-06-05
DE69013623D1 (de) 1994-12-01
EP0415347A2 (en) 1991-03-06
DE69013623T3 (de) 2002-12-19
EP0415347B1 (en) 1994-10-26
US5153162A (en) 1992-10-06

Similar Documents

Publication Publication Date Title
KR910004250A (ko) 메타크릴산 제조용 촉매
KR920006032A (ko) 철-안티몬-몰리브덴-함유 산화물 촉매 조성물 및 이의 제조 방법
EP0958860A3 (en) Lower alkane oxidative dehydrogenation catalysts containing i) Cr or Mo, ii) W and iii) Sb and process for producing olefins
JPS552619A (en) Preparation of methacrylic acid and catalyst
KR960704628A (ko) Fe, Co, Bi 및 Mo의 산화물을 기재로 하는 촉매(CATALYST BASED ON Fe, Co, Bi AND Mo OXIDES)
KR830005899A (ko) 굵은 촉매로부터 탁월한 활성을 가진 유동성촉매를 제조하는 방법
DE102008044890B4 (de) Katalysator für die katalytische Gasphasenoxidation von aromatischen Kohlenwasserstoffen zu Aldehyden, Carbonsäuren und/oder Carbonsäureanhydriden, insbesondere zu Phthalsäureanhydrid, sowie Verfahren zur Herstellung eines solchen Katalysators
KR920701099A (ko) 메타크롤레인 및 메타크릴산의 제조방법
KR950031223A (ko) 메타크릴산 제조용 촉매 및 이 촉매를 이용한 메타크릴산의 제조방법
ES2028180T3 (es) Catalizador para la oxidacion de acroleina y procedimiento para su preparacion.
BR9909164A (pt) Catalisador e processo para a oxidação de etano e/ou etileno
KR880006160A (ko) 메타클로 레인 및 메티크릴산의 제조방법
ES8101533A1 (es) Procedimiento para la fabricacion de metacroleina y acido metacrilico
DE69918831T2 (de) Verfahren zur regenration von molybden enthaltenden wirbelbett-oxid-katalysatoren
MY120644A (en) Complex oxide catalyst and process for preparation of acrylic acid
ATE363944T1 (de) Verfahren für die herstellung von acrylsäure
KR910015336A (ko) 메타크릴산 제조용 촉매의 제조방법
KR830003931A (ko) 개량된 Sb-함유 촉매의 제조방법
ID30386A (id) Kandungan perak dan vanadium pada oksida multi-logam dan penggunaannya
KR940000146A (ko) 불포화 알데히드 및 불포화 카르복실산 합성용 담지촉매와 그 제조방법
KR890003666A (ko) 메틸 3급-부틸 에테르로부터의 메타크롤레인 및 메타크릴산의 제조방법
KR880009695A (ko) 안티몬 및 텔루륨-함유 금속 산화물 촉매의 제조방법
GB1412059A (en) Process for production of acrylic acid
KR880005063A (ko) 메타크릴산의 제조방법
EP0350862A2 (en) Process for producing methacrylic acid

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20090424

Year of fee payment: 15

LAPS Lapse due to unpaid annual fee