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CN100464849C - A catalyst for producing propylene from propane dehydrogenation with alumina-modified mesoporous molecular sieve as carrier - Google Patents

A catalyst for producing propylene from propane dehydrogenation with alumina-modified mesoporous molecular sieve as carrier Download PDF

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Publication number
CN100464849C
CN100464849C CNB200710025372XA CN200710025372A CN100464849C CN 100464849 C CN100464849 C CN 100464849C CN B200710025372X A CNB200710025372X A CN B200710025372XA CN 200710025372 A CN200710025372 A CN 200710025372A CN 100464849 C CN100464849 C CN 100464849C
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Prior art keywords
catalyst
carrier
molecular sieve
mesoporous molecular
alumina
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CNB200710025372XA
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CN101125298A (en
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范以宁
黄丽华
史立华
许波连
李静
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Nanjing University
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Nanjing University
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/52Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
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Abstract

一种用氧化铝改性的中孔分子筛为载体的丙烷脱氢制丙烯的催化剂,用Al2O3改性的中孔分子筛为载体,铂锡双金属催化剂,氧化铝的重量百分比含量为:5.0~30.0%。催化剂的活性组分为金属铂,铂的重量百分比含量为:0.4%,助剂Sn的重量百分比含量为:0.1~2.0%。A catalyst for producing propylene by propane dehydrogenation with alumina-modified mesoporous molecular sieve as carrier, with Al2O3 -modified mesoporous molecular sieve as carrier, platinum-tin bimetallic catalyst, the weight percent content of alumina is: 5.0-30.0%. The active component of the catalyst is metal platinum, the content of platinum is 0.4% by weight, and the content of Sn, an auxiliary agent, is 0.1-2.0% by weight.

Description

The alumina modified mesoporous molecular sieve of a kind of usefulness is the catalyst of the preparing propylene by dehydrogenating propane of carrier
Technical field
The present invention relates to a kind of catalyst that is used for preparing propylene by dehydrogenating propane.
Background technology
Propylene except being used to produce the polypropylene, also is used to produce chemical products such as acrylonitrile, butanols, octanol, expoxy propane, isopropyl alcohol, isopropylbenzene, acrylic acid, oxo-alcohols and nonyl phenol as a kind of important Organic Chemicals in large quantities.Propylene is mainly derived from by-product or coproduction such as naphtha pyrolysis and oil plant FCC technology, growing along with the propylene demand, traditional production of propylene can not satisfy the demand growth of petrochemical iy produced to propylene, and special share of producing propylene propylene that technology is produced such as dehydrogenating propane technology will improve constantly.There is abundant petroleum and natural gas resource in China, and it is made up of 60% propane and 20% butane basically, and exploitation is produced low carbon olefin hydrocarbon by low-carbon alkanes can alleviate the not enough problem in propylene source, and to rationally utilizing C 3~C 4Alkane and to open up the new source of alkene significant.Propane catalytic dehydrogenation technology is representative with the Oleflex technology of Uop Inc. and the Catofin technology of U.S. Air Product company.
Load type platinum is catalyst based to be a class important in the alkane dehydrogenating catalyst, utilizes advanced technology to add various auxiliary agents and is prepared from, and production method is also open in the art.With platinum group is the catalyst such as the USP4 of main active component, 914,075, and USP 4,353,815, USP 4,420,649, USP 4,506, and 032, USP 4,595, and 673, EP 562,906, and EP 98,622, the catalyst based dehydrogenation that can be used for propane and other low-carbon alkanes of the Pt that relates to, above-mentioned catalyst has used Al without exception 2O 3Carrier as catalyst.Alexander etc. comprise platinum group metal and zinc on borosilicate and the alkali metal carrier at disclosed catalyst among the USP 6,103, and from the conversion ratio of alkane, the selectivity of alkene and the productive rate of alkene, this catalyst has excellent dehydrogenation.(the patent number of accepting: 200610086006.0) relate to a kind of is the catalyst for dehydrogenation of low-carbon paraffin of carrier with ZSM-5 to Chinese patent, and the stability and the alkane conversion of catalyst all are higher than with Al 2O 3Catalyst as carrier.With alumina modified mesoporous molecular sieve material is that the document of carrier loaded platinum tin bi-component alkane dehydrogenating catalyst does not appear in the newspapers.
Summary of the invention
The purpose of this invention is to provide a kind of catalyst that is used for dehydrogenating propane, this catalyst has higher conversion of propane and better dehydrogenation stability, has obvious social and economic benefit.
The invention is characterized in that the propane dehydrogenation catalyst that relates to is a carrier with the mesoporous molecular sieve that the surface is coated with aluminium oxide.With platinum as the activity of such catalysts component, with the auxiliary agent of Sn as catalyst.
Feature of the present invention also is, mesoporous molecular sieve SBA-15 or MCM-41 are wherein preferable with MCM-41.The weight percent content of each component in the catalyst, aluminium oxide: 5.0~30.0%, preferred 9.0~23.0%; Active metal component platinum: 0.4%; Auxiliary agent Sn:0.1~2.0%, preferred 0.2~1.2%.
Active component platinum in the catalyst and auxiliary agent Sn load on the carrier by the technology of soaking altogether.Carrier impregnation behind active component Pt and the auxiliary agent Sn, need be through super-dry, roasting and dechlorination are handled.The used roasting condition of this work is: 500 ℃, and air, 4h; The dechlorination condition: 500 ℃, (air+water vapour), 4h.
The specific embodiment
Enforcement below by dehydrogenating propane is described further technology of the present invention.
Embodiment 1:
By hydrothermal synthesis method, the MCM-41 mesopore material of preparation pure silicon.With ion-exchange with the Na among the baked MCM-41 +All be exchanged into H +After dry, the calcination process, impregnated in the aluminum nitrate solution, stirring at room 1h, stir in 60 ℃ of oil baths and be evacuated to dried, 100 ℃ of dried overnight, 550 ℃ of roasting 10h.The weight percent content of aluminium oxide is in the sample that obtains: 9.1%.The carrier compressing tablet that will contain aluminium oxide, sieve (20~40 order) impregnated in chloroplatinic acid and SnCl 4Mixed solution in, be evacuated to dried.120 ℃ of oven dry 3h, roasting 4h in 500 ℃ of following air, 500 ℃ of steam dechlorination 4h then.Catalyst consists of: Pt 0.4%, and Sn 0.59%.The catalyst of making is through H 2Be used for the test of dehydrogenating propane reactivity worth after the prereduction.590 ℃ of reaction temperatures, pressure are 0.1MPa, propane mass space velocity 6h -1, hydrogen/propane mol ratio is 1:4.During reaction 10h, the salic PtSn/Al of carrier of the present invention 2O 3The conversion of propane of/MCM-41 catalyst is 10%, propylene selectivity 88%.
Embodiment 2:
By hydrothermal synthesis method, the MCM-41 mesopore material of preparation pure silicon.With ion-exchange with the Na among the baked MCM-41 +All be exchanged into H +After dry, the calcination process, impregnated in the aluminum nitrate solution, stirring at room 1h, stir in 60 ℃ of oil baths and be evacuated to dried, 100 ℃ of dried overnight, 550 ℃ of roasting 10h.The weight percent content of aluminium oxide is in the sample that obtains: 23.1%.The carrier compressing tablet that will contain aluminium oxide, sieve (20~40 order) impregnated in chloroplatinic acid and SnCl 4Mixed solution in, be evacuated to dried.120 ℃ of oven dry 3h, roasting 4h in 500 ℃ of following air, 500 ℃ of steam dechlorination 4h then.Catalyst consists of: Pt 0.4%, Sn0.59%.The catalyst of making is through H 2Be used for the test of dehydrogenating propane reactivity worth after the prereduction.590 ℃ of reaction temperatures, pressure are 0.1MPa, propane mass space velocity 6h -1, hydrogen/propane mol ratio is 1:4.During reaction 10h, the salic PtSn/Al of carrier of the present invention 2O 3The conversion of propane of/MCM-41 catalyst can reach 17%, propylene selectivity 93%.
Embodiment 3:
By hydrothermal synthesis method, the SBA-15 mesopore material of preparation pure silicon.Baked SBA-15 be impregnated in the aluminum nitrate solution, stirring at room 1h, stir in 60 ℃ of oil baths and be evacuated to dried, 100 ℃ of dried overnight, 550 ℃ of roasting 10h.The weight percent content of aluminium oxide is in the sample that obtains: 23.1%.The carrier compressing tablet that will contain aluminium oxide, sieve (20~40 order) impregnated in chloroplatinic acid and SnCl 4Mixed solution in, be evacuated to dried.120 ℃ of oven dry 3h, roasting 4h in 500 ℃ of following air, 500 ℃ of steam dechlorination 4h then.Catalyst consists of: Pt 0.4%, and Sn 0.59%.The catalyst of making is through H 2Be used for the test of dehydrogenating propane reactivity worth after the prereduction.590 ℃ of reaction temperatures, pressure are 0.1MPa, propane mass space velocity 6h -1, hydrogen/propane mol ratio is 1:4.During reaction 10h, the salic PtSn/Al of carrier of the present invention 2O 3The conversion of propane of/SBA-15 catalyst is 14%, propylene selectivity 86%.

Claims (4)

1. one kind is the catalyst of the preparing propylene by dehydrogenating propane of carrier with alumina modified mesoporous molecular sieve, it is characterized in that as the mesoporous molecular sieve MCM-41 of catalyst carrier or SBA-15 with alumina modified, in the catalyst, the weight percent content of aluminium oxide is: 5.0~30.0%, the activity of such catalysts component is a metal platinum, the weight percent content of platinum is: 0.4%, and the weight percent content of auxiliary agent Sn is: 0.1~2.0%, form PtSn/Al 2O 3/ MCM-41 or PtSn/Al 2O 3/ SBA-15 catalyst.
2. the alumina modified mesoporous molecular sieve of usefulness as claimed in claim 1 is the catalyst of the preparing propylene by dehydrogenating propane of carrier, it is characterized in that mesoporous molecular sieve is MCM-41.
3. the alumina modified mesoporous molecular sieve of usefulness as claimed in claim 1 is the catalyst of the preparing propylene by dehydrogenating propane of carrier, it is characterized in that auxiliary agent Sn weight percent content 0.2~1.2%.
4. the alumina modified mesoporous molecular sieve of usefulness as claimed in claim 1 is the catalyst of the preparing propylene by dehydrogenating propane of carrier, it is characterized in that alumina weight degree 9.0~23.0%.
CNB200710025372XA 2007-07-26 2007-07-26 A catalyst for producing propylene from propane dehydrogenation with alumina-modified mesoporous molecular sieve as carrier Expired - Fee Related CN100464849C (en)

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Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101590424B (en) * 2008-05-29 2015-01-07 北京三聚环保新材料股份有限公司 Hydrogenation catalyst of distillate oil and preparation method thereof
CN102219631B (en) * 2010-04-15 2013-12-25 中国石油化工股份有限公司 Method for selectively oxidizing and catalyzing hydrogen in propane dehydrogenation process
CN102463152B (en) * 2010-11-04 2014-01-01 中国石油化工股份有限公司 Method for processing dehydrogenation catalyst before application
CN102463148B (en) * 2010-11-04 2014-01-01 中国石油化工股份有限公司 Vulcanization and startup method of dehydrogenation catalyst
CN102464542B (en) * 2010-11-04 2015-01-14 中国石油化工股份有限公司 Startup method of dehydrogenation catalyst
EP2689843A1 (en) 2012-07-26 2014-01-29 Saudi Basic Industries Corporation Alkane dehydrogenation catalyst and process for its preparation
CN104591942B (en) * 2013-11-03 2016-04-27 中国石油化工股份有限公司 Method of dehydrogenating
CN103816933B (en) * 2014-02-13 2016-05-11 中国石油大学(北京) A kind of catalysis dehydrogenation material and its preparation method and application
CN105582979B (en) * 2014-10-22 2018-04-10 中国石油化工股份有限公司 A kind of catalyst for dehydrogenation of low-carbon paraffin and preparation method thereof
CN105148979B (en) * 2015-09-21 2017-06-30 西南化工研究设计院有限公司 One kind is for preparing propylene transformed composite carried catalyst of dehydrogenating propane and preparation method thereof
CN106607105B (en) * 2015-10-22 2019-12-10 中国石油化工股份有限公司 Activation method of platinum-containing low-carbon alkane dehydrogenation catalyst
CN108855066B (en) * 2017-05-10 2019-09-27 中国石油化工股份有限公司 The method of propane dehydrogenation catalyst and preparation method thereof and preparing propylene by dehydrogenating propane
CN109647494B (en) * 2019-02-19 2020-03-31 西南化工研究设计院有限公司 Composite carrier catalyst for preparing propylene by propane conversion and preparation method thereof
CN115487851A (en) * 2021-06-18 2022-12-20 中国石油化工股份有限公司 Spherical dehydrogenation catalyst, preparation method thereof and application in isobutane dehydrogenation to isobutene reaction

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US5344805A (en) * 1993-05-03 1994-09-06 Phillips Petroleum Company Platinum and tin-containing catalyst and use thereof in alkane dehydrogenation
WO1999046039A1 (en) * 1998-03-13 1999-09-16 Den Norske Stats Oljeselskap A.S Improved catalyst support material
CN1396146A (en) * 2002-08-21 2003-02-12 复旦大学 Process for preparing nano catalyst used to prepare propene by oxidizing and dehydrogenating propane
CN101003458A (en) * 2006-01-19 2007-07-25 中国石油化工股份有限公司 Method for preparing propylene by dehydrogenating propane

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
US5344805A (en) * 1993-05-03 1994-09-06 Phillips Petroleum Company Platinum and tin-containing catalyst and use thereof in alkane dehydrogenation
WO1999046039A1 (en) * 1998-03-13 1999-09-16 Den Norske Stats Oljeselskap A.S Improved catalyst support material
CN1396146A (en) * 2002-08-21 2003-02-12 复旦大学 Process for preparing nano catalyst used to prepare propene by oxidizing and dehydrogenating propane
CN101003458A (en) * 2006-01-19 2007-07-25 中国石油化工股份有限公司 Method for preparing propylene by dehydrogenating propane

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