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公开(公告)号：EP1140740A1
公开(公告)日：2001-10-10
申请号：EP99965748.9
申请日：1999-11-04
CPC分类号： C01B39/38 , B01J29/04 , B01J29/40 , C01B39/40 , C07C5/2702 , C07C6/123 , C07C2529/40 , C07C15/067
摘要： A synthetic porous cystalline material has the structure of ZSM-5 and a composition involving the molar relationship: X2O3:(n)YO2, wherein X is a trivalent element; Y is a tetravalent element; and n is less than 25, and wherein the slope of the nitrogen sorption isotherm of the material at a partial pressure of nitrogen of 0,4 to 0,7 and a temperature 77 °K is greater than 30. The material has a mesoporous surface area (MSA) greater than 45 m2/g and is useful as a catalyst in the liquid phase isomerization of xylene.
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公开(公告)号：EP1100765A1
公开(公告)日：2001-05-23
申请号：EP99934165.4
申请日：1999-07-20
IPC分类号： C07C67/39 , C07C51/265
摘要： A process for producing terephthalic acid and/or dimethyl terephthalate includes contacting a toluene-containing reaction stream with a first catalyst under toluene disproportionation conditions to produce an intermediate product stream of para-xylene with negligible ortho-xylene. The first catalyst includes a crystalline molecular sieve which has an ortho-xylene diffusion rate of at least 50 minutes. The first catalyst can be modified by selectivation with a silicon compound or carbon compound. The intermediate product stream, without need for para-xylene purification, is oxidized to terephthalic acid or dimethyl terephthalate.
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公开(公告)号：EP1109761A1
公开(公告)日：2001-06-27
申请号：EP99942143.1
申请日：1999-08-12
发明人： ABICHANDANI, Jeevan, Sahib , BECK, Jeffrey, Scott , BROWN, Stephen, Harold , CIMINI, Ronald, Joseph , KWOK, Selma , JOHNSON, Ivy, Dawn , LIGURAS, Dimitris, Konstantine , STERN, David, Lawrence
CPC分类号： C07C15/08 , C07C4/18 , C07C5/2702 , C07C2523/36 , C07C2523/42 , C07C2523/44 , C07C2523/46 , C07C2529/00 , C07C2529/80 , C07C15/067
摘要： A process is described for increasing the efficiency of para-xylene production using a two stage isomerization sequence. In the first stage of the process, a C9+ aromatics feedstock is subjected to ethylbenzene conversion and xylene isomerization. Non-C¿8? aromatics are removed from the effluent, which is then processed in a second stage of the process to remove para-xylene and isomerize the para-xylene depleted effluent. The effluent from the second stage isomerization unit is then recycled into the inlet of the second stage of the process and a slip stream from the para-xylene separator is recycled to the feedstock and to the effluent of the ethylbenzene conversion unit. In this way, the production of para-xylene is maximized. In a preferred embodiment, toluene is co-fed into the feedstock to minimize the loss of xylenes during the ethylbenzene conversion reaction.
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公开(公告)号：EP1071641A1
公开(公告)日：2001-01-31
申请号：EP99918498.9
申请日：1999-04-12
发明人： BECK, Jeffrey, Scott , CRANE, Robert, Andrew, Jr. , MATHIAS, Mark, Fischer , KOWALSKI, Jocelyn, Anne , LISSY, Daria, Nowakiwska , STERN, David, Lawrence
CPC分类号： C07C15/067 , C07C2529/068
摘要： A process is described for isomerizing a feed which contains ethylbenzene and xylene, which process comprises the steps of: a) contacting the feed under ethylbenzene conversion conditions with a particulate first catalyst component which comprises a molecular sieve having a Constraint Index of 1-12, the particles of said first catalyst component having a surface to volume ratio of 80 to less than 200 inch-1 and the contacting step converting ethylbenzene in the feed to form an ethylbenzene-depleted product; and then b) contacting the ethylbenzene-depleted product under xylene isomerization conditions with a second catalyst component.
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5.发明公开PROCESS FOR MODIFYING THE SHAPE SELECTIVITY OF A ZEOLITE CATALYST AND USE OF THE MOFIFIED CATALYST 失效方法对形状选择性沸石催化剂的改性及改性使用催化剂
公开(公告)号：EP0703886A1
公开(公告)日：1996-04-03
申请号：EP94920006.0
申请日：1994-05-13
发明人： BECK, Jeffrey, Scott , CHANG, Clarence, Dayton , LUTNER, John, Dennis , McCULLEN, Sharon, Brawner , OLSON, David, Harold , RODEWALD, Paul, Gerhard, Jr. , SHIHABI, David, Said , VENKAT, Chaya, Rao
CPC分类号： C07C6/123 , B01J29/40 , B01J37/086 , B01J2229/12 , B01J2229/32 , B01J2229/36 , B01J2229/42 , C07C2/66 , C07C2/864 , C07C2529/00 , C07C2529/06 , C07C2529/40 , C07C2529/65 , C07C2529/70 , Y02P20/52 , C07C15/02 , C07C15/00
摘要： In a process for modifying the shape selectivity of an aluminosilicate zeolite catalyst having a silica to alumina molar ratio less than 500, the catalyst is exposed to at least two ex situ selectivation sequences, wherein each ex situ selectivation sequence includes the steps of contacting the catalyst with a selectivating agent, normally an organosilicon compound, in a carrier and subsequently calcining the catalyst.
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公开(公告)号：EP0512026B1
公开(公告)日：1994-12-21
申请号：EP91903549.3
申请日：1991-01-23
发明人： BECK, Jeffrey, Scott , CHU, Cynthia, Ting-Wah , JOHNSON, Ivy, Dawn , KRESGE, Charles, Theodore , LEONOWICZ, Michael, Edward , ROTH, Wieslaw, Jerzy , VARTULI, James, Clarke
CPC分类号： C01B37/00 , B01D53/8628 , B01J20/041 , B01J20/06 , B01J20/08 , B01J20/103 , B01J20/12 , B01J20/18 , B01J29/0308 , B01J29/04 , B01J29/041 , B01J29/046 , B01J29/40 , B01J29/70 , B01J29/82 , B01J29/83 , B01J29/85 , B01J2229/26 , B01J2229/32 , B01J2229/34 , B01J2229/36 , B01J2229/40 , B01J2229/42 , C01B37/02 , C01B37/08 , C01B39/00 , C10G11/05 , C10G47/16
摘要： This invention relates to a composition of matter comprising an inorganic, porous crystalline phase material exhibiting, after calcination, an X-ray diffraction pattern with at least one peak at a d-spacing greater than 1.8 nm and having a benzene adsorption capacity of greater than 15 grams benzene per 100 grams of said material at 6.7 kPa (50 torr) and 25 °C. Preferably, the crystalline phase material has a hexagonal arrangement of uniformly-sized pores at least 1.3 nm in diameter and exhibiting, after calcination, a hexagonal electron diffraction pattern that can be indexed with a d100 value greater than 1.8 nm.
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公开(公告)号：EP0792251B1
公开(公告)日：2001-04-04
申请号：EP95941529.0
申请日：1995-11-16
发明人： ABICHANDANI, Jeevan, Sahib , BECK, Jeffrey, Scott , BUNDENS, Robert, Glenn , BRECKENRIDGE, Lloyd, Lee , OLSON, David, Harold , REISCHMAN, Paul, Thomas , STERN, David, Lawrence , VENKAT, Chaya, Rao
IPC分类号： C07C5/22
CPC分类号： C07C15/08 , B01J29/44 , B01J29/65 , B01J29/70 , B01J2229/12 , B01J2229/42 , C07C4/18 , C07C5/2708 , C07C15/00 , C07C15/067 , C07C2529/06 , C07C2529/40 , C07C2529/65 , C07C2529/70 , Y02P20/52 , C07C15/04
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公开(公告)号：EP0763001B1
公开(公告)日：1999-09-08
申请号：EP95919157.8
申请日：1995-05-11
CPC分类号： C07C2/66 , C07C6/123 , C07C2529/70 , C07C15/02
摘要： A process is provided for selective catalytic conversion of certain hydrocarbon feedstocks to product rich in para-dialkyl substituted benzenes. The catalyst employed in the process comprises a crystalline material having the structure of PSH-3, MCM-22 or MCM-49, or a mixture of said crystalline materials, said crystalline material having been treated with a selectivating agent, such as a silicon compound, which decomposes to oxide or non-oxide ceramic or solid-state carbon species.
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公开(公告)号：EP0792251A1
公开(公告)日：1997-09-03
申请号：EP95941529.0
申请日：1995-11-16
发明人： ABICHANDANI, Jeevan, Sahib , BECK, Jeffrey, Scott , BUNDENS, Robert, Glenn , BRECKENRIDGE, Lloyd, Lee , OLSON, David, Harold , REISCHMAN, Paul, Thomas , STERN, David, Lawrence , VENKAT, Chaya, Rao
CPC分类号： C07C15/08 , B01J29/44 , B01J29/65 , B01J29/70 , B01J2229/12 , B01J2229/42 , C07C4/18 , C07C5/2708 , C07C15/00 , C07C15/067 , C07C2529/06 , C07C2529/40 , C07C2529/65 , C07C2529/70 , Y02P20/52 , C07C15/04
摘要： A mixture of aromatic hydrocarbons, comprising ethylbenzene and at least one xylene, is isomerized using a two component catalyst system to convert the ethylbenzene to compounds that may be removed from the aromatic hydrocarbon stream and to produce a product stream wherein the para-xylene concentration is approximately equal to the equilibrium ratio of the para-isomer. The first catalyst comprises an intermediate pore size zeolite that is effective for ethylbenzene conversion. The first catalyst is preferably silica-bound. The second catalyst comprises an intermediate pore size zeolite, which further has a small crystal size and which is effective to catalyze xylene isomerization. Each of the catalysts of this invention may contain one or more hydrogenation/dehydrogenation component.
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公开(公告)号：EP0763001A1
公开(公告)日：1997-03-19
申请号：EP95919157.0
申请日：1995-05-11
CPC分类号： C07C2/66 , C07C6/123 , C07C2529/70 , C07C15/02
摘要： A process is provided for selective catalytic conversion of certain hydrocarbon feedstocks to product rich in para-dialkyl substituted benzenes. The catalyst employed in the process comprises a crystalline material having the structure of PSH-3, MCM-22 or MCM-49, or a mixture of said crystalline materials, said crystalline material having been treated with a selectivating agent, such as a silicon compound, which decomposes to oxide or non-oxide ceramic or solid-state carbon species.
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