CN1131859C - 制备邻苯二甲酸酐的方法 - Google Patents

制备邻苯二甲酸酐的方法 Download PDF

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Publication number
CN1131859C
CN1131859C CN998066206A CN99806620A CN1131859C CN 1131859 C CN1131859 C CN 1131859C CN 998066206 A CN998066206 A CN 998066206A CN 99806620 A CN99806620 A CN 99806620A CN 1131859 C CN1131859 C CN 1131859C
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catalyst
weight
activity
active material
gram
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Chinese (zh)
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CN1303383A (zh
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T·黑德曼
H·宛捷柯
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BASF SE
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BASF SE
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/19Catalysts containing parts with different compositions
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/255Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
    • C07C51/265Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/002Mixed oxides other than spinels, e.g. perovskite
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/14Phosphorus; Compounds thereof
    • B01J27/186Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J27/195Phosphorus; Compounds thereof with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium with vanadium, niobium or tantalum
    • B01J27/198Vanadium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02Impregnation, coating or precipitation
    • B01J37/0215Coating
    • B01J37/0221Coating of particles
    • B01J37/0223Coating of particles by rotation
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/31Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting
    • C07C51/313Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation of cyclic compounds with ring-splitting with molecular oxygen
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D307/00Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/77Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D307/87Benzo [c] furans; Hydrogenated benzo [c] furans
    • C07D307/89Benzo [c] furans; Hydrogenated benzo [c] furans with two oxygen atoms directly attached in positions 1 and 3
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2523/00Constitutive chemical elements of heterogeneous catalysts

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  • 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)
  • Furan Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
CN998066206A 1998-05-26 1999-05-10 制备邻苯二甲酸酐的方法 Expired - Lifetime CN1131859C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823262.4 1998-05-26
DE19823262A DE19823262A1 (de) 1998-05-26 1998-05-26 Verfahren zur Herstellung von Phthalsäureanhydrid

Publications (2)

Publication Number Publication Date
CN1303383A CN1303383A (zh) 2001-07-11
CN1131859C true CN1131859C (zh) 2003-12-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN998066206A Expired - Lifetime CN1131859C (zh) 1998-05-26 1999-05-10 制备邻苯二甲酸酐的方法

Country Status (10)

Country Link
US (1) US6700000B1 (enExample)
EP (1) EP1084115B1 (enExample)
JP (2) JP2002516319A (enExample)
KR (1) KR100611283B1 (enExample)
CN (1) CN1131859C (enExample)
DE (2) DE19823262A1 (enExample)
ES (1) ES2197684T3 (enExample)
ID (1) ID27092A (enExample)
TW (1) TW444004B (enExample)
WO (1) WO1999061433A1 (enExample)

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19839001A1 (de) 1998-08-27 2000-03-02 Basf Ag Schalenkatalysatoren für die katalytische Gasphasenoxidation von aromatischen Kohlenwasserstoffen
DE19851786A1 (de) 1998-11-10 2000-05-11 Basf Ag Silber- und Vanadiumoxid enthaltendes Multimetalloxid und dessen Verwendung
KR100533877B1 (ko) * 2003-05-03 2005-12-29 동양종합건설 주식회사 다이옥신을 포함한 방향족할로겐화합물, 일산화탄소 및질소산화물을 제거하는 촉매 및 이의 용도
DE10323818A1 (de) 2003-05-23 2004-12-09 Basf Ag Katalysatorsysteme zur Herstellung von Phthalsäureanhydrid
DE10323817A1 (de) * 2003-05-23 2004-12-09 Basf Ag Verfahren zur Herstellung von Phthalsäureanhydrid
DE10334132A1 (de) 2003-07-25 2005-04-07 Basf Ag Silber, Vanadium und ein Promotormetall enthaltendes Multimetalloxid und dessen Verwendung
DE10335346A1 (de) * 2003-08-01 2005-02-24 Basf Ag Katalysator für Gasphasenoxidationen
CN100429209C (zh) * 2003-08-14 2008-10-29 中国石油化工股份有限公司 一种邻苯二甲酸酐的制备方法
DE10344846A1 (de) * 2003-09-26 2005-04-14 Basf Ag Gasphasenoxidationskatalysator mit definierter Vanadiumoxid-Teilchengrößenverteilung
DE102004026472A1 (de) * 2004-05-29 2005-12-22 Süd-Chemie AG Mehrlagen-Katalysator zur Herstellung von Phthalsäureanhydrid
WO2005115615A1 (de) * 2004-05-29 2005-12-08 Süd-Chemie AG Katalysator sowie verfahren zur herstellung von phthalsäureanhydrid
DE102004028930A1 (de) * 2004-06-15 2006-01-05 Basf Ag Silber, Vanadium und ein Element der Phosphorgruppe enthaltendes Multimetalloxid und dessen Verwendung
MX2007005850A (es) * 2004-11-18 2007-06-15 Basf Ag Uso de mezclas de dioxido de titanio para producir catalizadores.
TWI376266B (en) * 2005-03-02 2012-11-11 Sued Chemie Ag Process for manufacture of a multiple layer catalyst for producing phthalic acid anhydride
DE102005009473A1 (de) * 2005-03-02 2006-09-07 Süd-Chemie AG Mehrlagen-Katalysator zur Herstellung von Phthalsäureanhydrid
MX2007014147A (es) * 2005-05-22 2008-03-18 Sued Chemie Ag Catalizador constituido de multiples capas para producir anhidrido ftalico.
KR100671978B1 (ko) * 2005-07-19 2007-01-24 한국과학기술연구원 탈질환원촉매
AU2006283170A1 (en) * 2005-08-23 2007-03-01 Altairnano, Inc. Highly photocatalytic phosphorus-doped anatase-TiO2 composition and related manufacturing methods
PL1965911T3 (pl) * 2005-11-23 2013-12-31 Sued Chemie Ip Gmbh & Co Kg Katalizator powłokowy, w szczególności do utleniania metanolu do formaldehydu oraz sposób jego wytwarzania
EP1792651A1 (de) * 2005-11-23 2007-06-06 Süd-Chemie Ag Schalenkatalysator, insbesondere zur Oxidation von Methanol zu Formaldehyd sowie Verfahren zu dessen Herstellung
WO2007116018A1 (de) * 2006-04-12 2007-10-18 Basf Se Katalysatorsystem zur herstellung von carbonsäuren und/oder carbonsäurenanhydriden
EP1852413A1 (de) * 2006-04-27 2007-11-07 Basf Aktiengesellschaft Verfahren zur Gasphasenoxidation unter Verwendung einer Moderatorlage
WO2007135104A1 (de) 2006-05-19 2007-11-29 Basf Se Herstellung von phthalsäureanhydrid durch gasphasenoxidation von o-xylol
JP5114474B2 (ja) 2006-05-19 2013-01-09 ビーエーエスエフ ソシエタス・ヨーロピア 主要反応器および後方反応器中でのo−キシロールの気相酸化による無水フタル酸の製造
EP1860091A1 (de) * 2006-05-23 2007-11-28 Süd-Chemie Ag Katalysator enthaltend Titandioxid, insbesondere zur Herstellung von Phthalsäurenanhydrid
JP2009541245A (ja) * 2006-06-20 2009-11-26 ビーエーエスエフ ソシエタス・ヨーロピア 触媒系及びカルボン酸及び/又は無水カルボン酸の製造法
CN101130535B (zh) * 2006-08-25 2010-10-13 中国石油化工股份有限公司 一种邻苯二甲酸酐的制备方法
BRPI0720411A2 (pt) 2006-12-21 2013-12-31 Basf Se Processo para oxidação em fase gasosa, e, sistema catalisador para a realização de processos de oxidação em fase gasosa
DE102007028333A1 (de) 2007-06-15 2008-12-18 Basf Se Verfahren zum Einbringen einer wenigstens einer Produktionscharge von ringförmigen Schalenkatalysatoren K entnommenen Teilmenge in ein Reaktionsrohr eines Rohrbündelreaktors
DE102008011011A1 (de) 2008-02-01 2009-08-06 Breimair, Josef, Dr. Katalysator für die katalytische Gasphasenoxidation von aromatischen Kohlenwasserstoffen zu Aldehyden, Carbonsäuren und/oder Carbonsäureanhydriden, insbesondere zu Phthalsäureanhydrid
EP2274265A1 (de) * 2008-04-07 2011-01-19 Basf Se Verfahren zum anfahren eines gasphasenoxidationsreaktors, der eine katalytisch aktive silber-vanadiumoxid-bronze enthält
US8492566B2 (en) 2008-04-07 2013-07-23 Basf Se Method for starting a gas-phase oxidation reactor
DE102009041960A1 (de) 2009-09-17 2011-04-07 Süd-Chemie AG Verfahren zur Herstellung einer Katalysatoranordnung für die Herstellung von Phthalsäureanhydrid
DE102009049173A1 (de) 2009-10-13 2011-04-21 Süd-Chemie AG Reaktoranordnung zur katalytischen Gasphasenoxidation
EP2501472A1 (de) * 2009-11-20 2012-09-26 Basf Se Mehrlagenkatalysator zur herstellung von carbonsäuren und/oder carbonsäureanhydriden mit vanadiumantimonat in wenigstens einer katalysatorlage und verfahren zur herstellung von phthalsäureanhydrid mit niedriger hotspottemperatur
DE102010006854A1 (de) 2010-02-04 2011-08-04 Süd-Chemie AG, 80333 Verfahren zur Gasphasenoxidation von Kohlenwasserstoffen
DE102010012090A1 (de) 2010-03-19 2011-11-17 Süd-Chemie AG Verfahren zur katalytischen Gasphasenoxidation von Kohlenwasserstoffen und Katalysereaktionsvorrichtung
US20110230668A1 (en) * 2010-03-19 2011-09-22 Basf Se Catalyst for gas phase oxidations based on low-sulfur and low-calcium titanium dioxide
TW201206896A (en) 2010-04-13 2012-02-16 Basf Se Process for controlling a gas phase oxidation reactor for preparation of phthalic anhydride
US8859459B2 (en) 2010-06-30 2014-10-14 Basf Se Multilayer catalyst for preparing phthalic anhydride and process for preparing phthalic anhydride
US9212157B2 (en) 2010-07-30 2015-12-15 Basf Se Catalyst for the oxidation of o-xylene and/or naphthalene to phthalic anhydride
DE102013000648A1 (de) 2013-01-16 2014-07-17 Clariant International Ltd. Verfahren zur Optimierung der Aktivmassenbeladung eines Phthalsäureanhydrid-Katalysators
DE102013000647A1 (de) 2013-01-16 2014-07-17 Clariant International Ltd. Verfahren zur Optimierung von Lagenlängen eines Phthalsäureanhydrid-Katalysators
DE102013000654B4 (de) 2013-01-16 2020-10-15 Clariant International Ltd. Verfahren zur Optimierung der Aktivität eines Phthalsäureanhydrid-Katalysators
EP3013783B1 (de) 2013-06-26 2018-10-17 Basf Se Verfahren zur herstellung von phthalsäureanhydrid
JP6466429B2 (ja) 2013-06-26 2019-02-06 ビーエーエスエフ ソシエタス・ヨーロピアBasf Se 気相酸化反応器を始動するための方法
JP6257758B2 (ja) * 2014-04-24 2018-01-10 クラリアント・インターナシヨナル・リミテツド 無水フタル酸を製造するための最適化された空隙率を有する触媒配置構成物
DE102014005939A1 (de) 2014-04-24 2015-10-29 Clariant International Ltd. Katalysatoranordnung mit optimierter Oberfläche zur Herstellung von Phthalsäureanhydrid
GB2568563B (en) 2018-07-17 2023-03-08 Omnagen Ltd Chemical reactor for controlled temperature gas phase oxidation reactions
CN113617396A (zh) * 2021-07-20 2021-11-09 安徽力天环保科技股份有限公司 一种苯酐催化剂及其制备方法

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH444046A (de) 1965-06-14 1967-09-15 Glatt Werner Zur Aufnahme eines pulvrigen oder körnigen Behandlungsgutes in einem Warmlufttrockner dienender Behälter
US3565829A (en) 1967-10-04 1971-02-23 Basf Ag Supported catalysts containing vanadium pentoxide and titanium dioxide
DE1769998B2 (de) 1968-08-20 1977-01-27 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von phthalsaeureanhydrid
JPS4934672B1 (enExample) * 1970-12-26 1974-09-17
DE2106796C3 (de) 1971-02-12 1981-09-24 Wacker-Chemie GmbH, 8000 München Verfahren zur Herstellung Festbettkatalysatoren mit einem Überzug aus Vanadiumpentoxid und Titandioxid
JPS523930B2 (enExample) * 1971-11-29 1977-01-31
JPS5143732A (en) 1974-10-11 1976-04-14 Nippon Catalytic Chem Ind Musuifutarusanno seizohoho
DE2546268C3 (de) * 1975-10-16 1983-11-24 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von Phthalsäureanhydrid aus o-Xylol oder Naphthalin
US4203906A (en) 1977-07-13 1980-05-20 Nippon Shokubai Kagaku Kogyo Co., Ltd. Process for catalytic vapor phase oxidation
JPS603307B2 (ja) 1978-11-29 1985-01-26 株式会社日本触媒 無水フタル酸の製造方法
US4342699A (en) 1981-02-23 1982-08-03 Standard Oil Company (Indiana) Process for production of maleic anhydride
EP0099431B1 (en) 1982-07-20 1987-10-28 Amoco Corporation Process for production of maleic anhydride
CA1261860A (en) 1984-05-21 1989-09-26 Yoshiyuki Nakanishi Method for the preparation of pyromellitic acid or its anhydride
JPS63253080A (ja) * 1987-04-10 1988-10-20 Nippon Steel Chem Co Ltd 無水フタル酸の製造方法
JPH04114745A (ja) * 1990-09-04 1992-04-15 Nippon Shokubai Co Ltd 無水フタル酸製造用触媒および該触媒を用いた無水フタル酸の製造方法
US5235071A (en) 1991-07-10 1993-08-10 Nippon Shokubai Co., Ltd. Catalyst for producing phthalic anhydride and process by using the same
EP0539878B1 (en) 1991-10-25 1996-01-10 Nippon Shokubai Co., Ltd. Method for production of phthalic anhydride by vapor-phase oxidation of mixture of ortho-xylene with naphthalene
CN1066707C (zh) 1994-04-05 2001-06-06 株式会社日本触媒 生产1,2,4,5-苯四酸酐的方法
DE4412737A1 (de) * 1994-04-13 1995-10-19 Andrija Dr Ing Fuderer Verfahren zur Erzeugung von Phthalsäureanhydrid
DE4442346A1 (de) 1994-11-29 1996-05-30 Basf Ag Verfahren zur Herstellung eines Katalysators, bestehend aus einem Trägerkörper und einer auf der Oberfläche des Trägerkörpers aufgebrachten katalytisch aktiven Oxidmasse
DE19519172A1 (de) 1995-05-24 1996-11-28 Consortium Elektrochem Ind Trägerkatalysator für Gasphasenoxidationsreaktoren
TW415939B (en) * 1996-10-23 2000-12-21 Nippon Steel Chemical Co Gas-phase oxidization process and process for the preparation of phthalic anhydride
DE19707943C2 (de) 1997-02-27 1999-07-08 Basf Ag Verfahren zur Herstellung von Phthalsäureanhydrid und Katalysator hierfür
DE59808069D1 (de) 1997-02-27 2003-05-28 Basf Ag Verfahren zur herstellung von schalenkatalysatoren für die katalytische gasphasenoxidation von aromatischen kohlenwasserstoffen

Also Published As

Publication number Publication date
CN1303383A (zh) 2001-07-11
EP1084115B1 (de) 2003-04-09
TW444004B (en) 2001-07-01
WO1999061433A1 (de) 1999-12-02
ES2197684T3 (es) 2004-01-01
EP1084115A1 (de) 2001-03-21
JP5479377B2 (ja) 2014-04-23
DE19823262A1 (de) 1999-12-02
JP2011088925A (ja) 2011-05-06
ID27092A (id) 2001-03-01
KR20010043836A (ko) 2001-05-25
US6700000B1 (en) 2004-03-02
DE59904964D1 (de) 2003-05-15
JP2002516319A (ja) 2002-06-04
KR100611283B1 (ko) 2006-08-10

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Granted publication date: 20031224