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公开(公告)号:US5527520A
公开(公告)日:1996-06-18
申请号:US420187
申请日:1995-04-11
IPC分类号: B01J29/89 , C01B37/00 , C07B61/00 , C07D211/26 , C07D301/12 , C07D301/19 , C07D303/04 , C07D303/14
CPC分类号: C07D301/19 , B01J29/89 , C01B37/005 , C07D211/26 , C07D301/12 , C07D303/04 , Y10S423/27
摘要: A crystalline molecular sieve having a framework structure isomorphous with zeolite beta and containing Si and Ti, but essentially no framework Al, usefully catalyzes olefin epoxidation wherein hydrogen peroxide or an organic hydroperoxide is utilized as the oxidizing agent.
摘要翻译: 具有与沸石β同晶并且含有Si和Ti,但基本上不含骨架A1的骨架结构的结晶分子筛有效地催化烯键式环氧化,其中使用过氧化氢或有机氢过氧化物作为氧化剂。
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公开(公告)号:US5412122A
公开(公告)日:1995-05-02
申请号:US172404
申请日:1993-12-23
申请人: Robert J. Saxton , John G. Zajacek , Guy L. Crocco
发明人: Robert J. Saxton , John G. Zajacek , Guy L. Crocco
IPC分类号: B01J29/89 , C07D301/12 , C07D303/04
CPC分类号: B01J29/89 , C07D301/12 , C07D303/04
摘要: Olefins are epoxidized by hydrogen peroxide in the presence of a modified titanium-containing molecular sieve having a framework structure isomorphous with zeolite beta and comprised of Si, Ti, and Al. The molecular sieve is modified by substituting the aluminum-associated cationic sites with ammonium, alkali metal, or alkaline earth cations instead of protons.
摘要翻译: 在具有与沸石β同晶但由Si,Ti和Al组成的骨架结构的改性含钛分子筛存在下,烯烃被过氧化氢环氧化。 通过用铵,碱金属或碱土金属阳离子代替铝相关的阳离子位点代替质子来修饰分子筛。
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公开(公告)号:US5695736A
公开(公告)日:1997-12-09
申请号:US769472
申请日:1996-12-20
申请人: Robert J. Saxton , John G. Zajacek , Guy L. Crocco
发明人: Robert J. Saxton , John G. Zajacek , Guy L. Crocco
IPC分类号: B01J29/89 , C01B37/00 , C07D301/12 , C07D301/19 , C07D303/04 , C01B39/06 , B01J29/04
CPC分类号: C07D301/19 , B01J29/89 , C01B37/005 , C07D301/12 , C07D303/04 , Y10S423/27
摘要: A crystalline molecular sieve having a framework structure isomorphous with zeolite beta and containing Si and Ti, but essentially no framework Al, usefully catalyzes olefin epoxidation wherein hydrogen peroxide is the oxidant.
摘要翻译: 具有与沸石β同晶并且含有Si和Ti,但基本上不含骨架A1的骨架结构的结晶分子筛有效地催化其中过氧化氢是氧化剂的烯烃环氧化。
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公开(公告)号:US5681789A
公开(公告)日:1997-10-28
申请号:US599830
申请日:1996-02-12
申请人: Robert J. Saxton , Guy L. Crocco , John G. Zajacek
发明人: Robert J. Saxton , Guy L. Crocco , John G. Zajacek
CPC分类号: B01J29/89
摘要: An as-synthesized zeolite having titanium substituted in its lattice framework and containing an organic template such as a quaternary ammonium salt may be activated for use as a catalyst by treating said as-synthesized zeolite with ozone. At least partial removal and/or reaction of the organic template is accomplished even at moderate temperatures, in contrast to conventional calcination techniques which require the use of significantly higher activation temperatures.
摘要翻译: 通过用臭氧处理所述合成的沸石,可以将具有在其晶格框架中取代的钛并含有有机模板如季铵盐的合成的沸石活化用作催化剂。 即使在中等温度下也能实现有机模板的至少部分去除和/或反应,与需要使用显着更高活化温度的常规煅烧技术相反。
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公开(公告)号:US5374747A
公开(公告)日:1994-12-20
申请号:US172405
申请日:1993-12-23
申请人: Robert J. Saxton , John G. Zajacek , Guy L. Crocco
发明人: Robert J. Saxton , John G. Zajacek , Guy L. Crocco
IPC分类号: B01J29/89 , C01B37/00 , C07D301/12 , C07D301/19 , C07D303/04 , C07D302/04
CPC分类号: C07D301/19 , B01J29/89 , C01B37/005 , C07D301/12 , C07D303/04 , Y10S423/27
摘要: A crystalline molecular sieve having a framework structure isomorphous with zeolite beta and containing Si and Ti, but essentially no framework Al, usefully catalyzes olefin epoxidation wherein hydrogen peroxide is the oxidant.
摘要翻译: 具有与沸石β同晶并且含有Si和Ti,但基本上不含骨架A1的骨架结构的结晶分子筛有效地催化其中过氧化氢是氧化剂的烯烃环氧化。
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公开(公告)号:US5684170A
公开(公告)日:1997-11-04
申请号:US650230
申请日:1996-05-20
申请人: Robert J. Saxton , John G. Zajacek , Guy L. Crocco
发明人: Robert J. Saxton , John G. Zajacek , Guy L. Crocco
IPC分类号: B01J29/89 , C01B37/00 , C07D301/12 , C07D301/19 , C07D303/04
CPC分类号: C07D301/19 , B01J29/89 , C01B37/005 , C07D301/12 , C07D303/04 , Y10S423/27
摘要: A crystalline molecular sieve having a framework structure isomorphous with zeolite beta and containing Si and Ti, but essentially no framework Al, usefully catalyzes olefin epoxidation wherein hydrogen peroxide is the oxidant.
摘要翻译: 具有与β沸石同晶并且含有Si和Ti,但基本上不含骨架A1的骨架结构的结晶分子筛有效地催化其中过氧化氢是氧化剂的烯烃环氧化。
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公开(公告)号:US5621122A
公开(公告)日:1997-04-15
申请号:US419775
申请日:1995-04-11
IPC分类号: B01J29/89 , C01B37/00 , C07B61/00 , C07D211/26 , C07D301/12 , C07D301/19 , C07D303/04 , C07D303/14
CPC分类号: C07D301/19 , B01J29/89 , C01B37/005 , C07D211/26 , C07D301/12 , C07D303/04 , Y10S423/27
摘要: A crystalline molecular sieve having a framework structure isomorphous with zeolite beta and containing Si and Ti, but essentially no framework Al, usefully catalyzes olefin epoxidation wherein hydrogen peroxide or an organic hydroperoxide is utilized as the oxidizing agent.
摘要翻译: 具有与沸石β同晶并且含有Si和Ti,但基本上不含骨架A1的骨架结构的结晶分子筛有效地催化其中使用过氧化氢或有机氢过氧化物作为氧化剂的烯烃环氧化。
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公开(公告)号:US5508019A
公开(公告)日:1996-04-16
申请号:US269292
申请日:1994-06-30
申请人: Robert J. Saxton , Guy L. Crocco , John G. Zajacek
发明人: Robert J. Saxton , Guy L. Crocco , John G. Zajacek
CPC分类号: C01B37/02 , B01J29/7007 , C01B39/026 , B01J2229/16 , B01J2229/34 , B01J2229/37 , Y10S423/27
摘要: Crystalline aluminosilicates such as zeolite beta may be readily dealuminated using organic sulfonic acids such as methanesulfonic acid to provide useful catalysts or catalyst precursors. A high degree of aluminum removal with minimal loss of crystallinity is possible even when an organic template is not present in the starting aluminosilicate.
摘要翻译: 结晶硅铝酸盐如β沸石可以使用有机磺酸如甲磺酸容易地脱铝,以提供有用的催化剂或催化剂前体。 即使在起始铝硅酸盐中不存在有机模板,也可以以最小的结晶损失进行高度的铝去除。
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公开(公告)号:US5693834A
公开(公告)日:1997-12-02
申请号:US404657
申请日:1995-03-15
IPC分类号: B01J25/02 , B01J29/035 , B01J29/89 , C01B15/026 , C07B61/00 , C07D301/12 , C07D303/04
CPC分类号: C07D301/12 , Y02P20/125
摘要: Epoxides are produced by an integrated process involving molecular oxygen oxidation of a secondary alcohol, separation of the ketone co-product, and epoxidation of an olefin using the ketone-free oxidation product in the presence of a titanium silicalite catalyst and a methanol-containing diluent wherein methanol recovered from the epoxidation product mixture serves as a source of methanol in the epoxidation step.
摘要翻译: 环氧化物通过在钛硅沸石催化剂和含甲醇的稀释剂存在下,使用无酮氧化产物,通过仲醇的分子氧氧化,酮共同产物的分离和烯烃的环氧化的综合方法生产 其中从环氧化产物混合物中回收的甲醇在环氧化步骤中用作甲醇源。
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公开(公告)号:US5753576A
公开(公告)日:1998-05-19
申请号:US443948
申请日:1995-05-18
申请人: Guy L. Crocco , John G. Zajacek
发明人: Guy L. Crocco , John G. Zajacek
IPC分类号: B01J29/89 , B01J29/90 , B01J38/02 , C07B61/00 , C07D301/12 , B01J20/34 , B01J35/02 , B01J38/12
CPC分类号: C07D301/12 , B01J29/89 , B01J29/90 , Y02P20/584
摘要: A titanium-containing molecular sieve which has been used as an oxidation catalyst is regenerated to provide a level of performance comparable to that of freshly prepared catalyst by heating at less than 400.degree. C. in the presence of molecular oxygen. The same batch of catalyst thus may be used over an extended period of time in a continuous epoxidation process by periodic practice of the aforedescribed reactivation method.
摘要翻译: 已经用作氧化催化剂的含钛分子筛再生,以提供与新制备的催化剂相当的性能水平,通过在分子氧存在下在小于400℃下加热。 因此,通过上述重新激活方法的周期性实践,可以在连续环氧化方法中在较长时间内使用相同批次的催化剂。
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