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公开(公告)号:US07396962B1
公开(公告)日:2008-07-08
申请号:US11814843
申请日:2006-01-06
IPC分类号: C07C45/52
摘要: The present invention relates to a process for manufacturing acrolein by dehydration of glycerol in the presence of molecular oxygen. The reaction is performed in the liquid phase or in the gas phase in the presence of a solid catalyst. The addition of oxygen makes it possible to obtain good glycerol conversion by inhibiting the deactivation of the catalyst and the formation of by-products.
摘要翻译: 本发明涉及在分子氧存在下通过甘油脱水制备丙烯醛的方法。 反应在液相或气相中,在固体催化剂存在下进行。 加入氧气使得可以通过抑制催化剂的失活和副产物的形成来获得良好的甘油转化率。
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公开(公告)号:US20080146852A1
公开(公告)日:2008-06-19
申请号:US11814843
申请日:2006-01-06
IPC分类号: C07C45/52
摘要: The present invention relates to a process for manufacturing acrolein by dehydration of glycerol in the presence of molecular oxygen. The reaction is performed in the liquid phase or in the gas phase in the presence of a solid catalyst. The addition of oxygen makes it possible to obtain good glycerol conversion by inhibiting the deactivation of the catalyst and the formation of by-products.
摘要翻译: 本发明涉及在分子氧存在下通过甘油脱水制备丙烯醛的方法。 反应在液相或气相中,在固体催化剂存在下进行。 加入氧气使得可以通过抑制催化剂的失活和副产物的形成来获得良好的甘油转化率。
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公开(公告)号:US5105022A
公开(公告)日:1992-04-14
申请号:US581195
申请日:1990-09-11
申请人: Wolfgang Holderich , KoDieter , Werner Bertleff
发明人: Wolfgang Holderich , KoDieter , Werner Bertleff
IPC分类号: C07C41/28
CPC分类号: C07C41/28 , Y02P20/582
摘要: Dialkoxyethenes of the formula ##STR1## where R.sup.1 to R.sup.4 are identical or different and are each straight-chain or branched alkyl or cycloalkyl or R.sup.2 and R.sup.3 may furthermore be hydrogen, aryl or alkenylaryl, and the aromatic may be substituted by further radicals, such as alkyl, alkoxy or halogens, are prepared by a process in which an alcohol of the formula R.sup.4 OH or R.sup.5 OH is eliminated from a trialkoxyethane of the formula (II) ##STR2## where R.sup.1 to R.sup.4 have the above meanings and R.sup.5 is straight-chain or branched alkyl or cycloalkyl, in the presence of a zeolite and/or a phosphate and/or phosphoric acid or boric acid on a carrier and/or an acidic, untreated metal oxide as a catalyst. Zeolites of the pentasil type are preferably used as catalysts.
摘要翻译: R 1〜R 4相同或不同且分别是直链或支链烷基或环烷基或R2和R3的式(I)的二烷氧基可以进一步为氢,芳基或烯基芳基,并且芳族可以被进一步取代 自由基,例如烷基,烷氧基或卤素,通过其中式R 4 OH或R 5 OH的醇从式(II)的三烷氧基乙烷(II)中除去的方法制备,其中R 1至R 4具有 在载体和/或酸性未处理的金属氧化物作为催化剂的沸石和/或磷酸盐和/或磷酸或硼酸存在下,R 5是直链或支链烷基或环烷基。 pentasil型的沸石优选用作催化剂。
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