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公开(公告)号：US10850267B2
公开(公告)日：2020-12-01
申请号：US15547264
申请日：2015-01-30
发明人： Xiao Xiang , Peng Tian , Zhongmin Liu , Yue Yang , Lin Liu , Miao Yang , Hongyi Yang , Shiyun Sang , Yanli He
IPC分类号： C01B39/54 , B01J29/85 , C01B39/02 , C01B37/08 , B01D53/86 , B01J37/00 , B01J37/06 , B01J37/08 , B01J37/30 , C07C1/20
摘要： A preparation method for a metal-modified SAPO molecular sieve is disclosed, characterized in adding a raw powder of the SAPO molecular sieve to a solution containing metal ions for performing ion exchange, and then washing and drying the obtained solid after ion exchange, so as to obtain the metal-modified SAPO molecular sieve. The metal-modified SAPO molecular sieve prepared has a relatively high degree of crystallinity, and the metal elements occupy the ionic positions in the channels and/or cages of the SAPO molecular sieve, and the metal-modified SAPO molecular sieve shows excellent catalytic performance in the catalytic reaction.
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公开(公告)号：US10508073B2
公开(公告)日：2019-12-17
申请号：US15743698
申请日：2015-12-08
发明人： Youming Ni , Wenliang Zhu , Yong Liu , Hongchao Liu , Zhongmin Liu , Miao Yang , Peng Tian
IPC分类号： C07C67/37 , C07C69/708 , B01J29/85 , B01J35/04
摘要： The present application provides a method for preparing acetal carbonyl compound used as an intermediate for producing ethylene glycol, which comprises a step in which a raw material acetal and a raw gas carbon monoxide go through a reactor loaded with a catalyst containing an acidic microporous silicoaluminophosphate molecular sieve, for carrying out a carbonylation reaction. In the method of the present invention, the conversion rate of the raw material acetal is high, and the selectivity of acetal carbonylation is high, and the catalyst life is long, and no additional solvent is needed in the reaction process, and the reaction condition is relatively mild, and the process is continuous, showing the potential for industrial application. Moreover, the product of acetal carbonyl compound can be used for producing ethylene glycol by hydrogenation followed by hydrolysis.
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公开(公告)号：US11247198B2
公开(公告)日：2022-02-15
申请号：US16767300
申请日：2017-12-20
发明人： Miao Yang , Peng Tian , Zhongmin Liu , Bing Li , Lin Liu , Shiyun Sang
摘要： The present application discloses a catalyst, the catalyst contains a molecular sieve, there is at least one-dimension 8-membered ring channel in the molecular sieve structure, the diameter of a diffusible substance in the direction of the 8-membered ring channel is no less than 2.0 Å, the diameter of a substance that can be accommodated in the molecular sieve structure is no more than 6 Å; the catalyst is used for a methanol and/or dimethyl ether to propylene reaction, comprising contacting methanol and/or dimethyl ether with a methanol-to-propylene catalyst to obtain propylene.
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公开(公告)号：US10822244B2
公开(公告)日：2020-11-03
申请号：US16321118
申请日：2016-08-02
发明人： Pengfei Wu , Miao Yang , Peng Tian , Zhongmin Liu , Linying Wang , Lin Liu
摘要： A method for synthesizing a nano SAPO-34 molecular sieve, and an SAPO-34 molecular sieve catalyst and application thereof. A nano SAPO-34 molecular sieve is synthesized by adding a microporous templating agent and a templating agent having a functionalized organic silane to hydrothermal synthesis. The nano SAPO-34 molecular sieve is calcined to obtain a nano SAPO-34 molecular sieve catalyst. The catalyst can be used in a reaction for preparing low-carbon olefin from an oxygen-containing compound. The nano SAPO-34 molecular sieve obtained by this method has a pure CHA crystal phase. Moreover, the nano SAPO-34 molecular sieve catalyst obtained by this method has good catalytic performance in a MTO reaction, the service life of the catalyst is significantly prolonged, and the selectivity of the low-carbon olefin is improved.
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