公开(公告)号：US20110201495A1

公开(公告)日：2011-08-18

申请号：US13095077

申请日：2011-04-27

申请人： Jampani Madhusudana RAO ,  Shanthan Pamulaparthy RAO ,  Siva Attaluri PRASAD ,  Banda NARASAIAH ,  Narayan Sripathi REDDY ,  Radhakrishnan KUPPUSAMY ,  Vijayakumar VEERAMACHANENI ,  Patil Kamalakar SUKHADEORAO ,  Rambabu YADLA ,  Koosampally SRINIVAS ,  Leelakrishna KONDAVETI

发明人： Jampani Madhusudana RAO ,  Shanthan Pamulaparthy RAO ,  Siva Attaluri PRASAD ,  Banda NARASAIAH ,  Narayan Sripathi REDDY ,  Radhakrishnan KUPPUSAMY ,  Vijayakumar VEERAMACHANENI ,  Patil Kamalakar SUKHADEORAO ,  Rambabu YADLA ,  Koosampally SRINIVAS ,  Leelakrishna KONDAVETI

IPC分类号： B01J23/24

CPC分类号： C07C19/08 ,  B01J23/06 ,  B01J23/26 ,  B01J37/0201 ,  B01J37/03 ,  B01J37/26 ,  C07C17/206 ,  C07C17/21 ,  Y02P20/582 ,  C07C19/12

摘要： The present invention relates to a process for preparing a co-precipated Cr2O3/Al2O3 catalyst promoted by Zinc, said process comprising co-precipatation of chromium and aluminum metal hydroxides from corresponding trivalent metal salt solutions using NH4OH, NaOH or KOH as a base and followed by calicination to give mixed oxide precatalyst in amorphous from which is impregnated with an activity promoting amount of Zinc compound. The catalyst is used for the preparation of HFC-134a by fluorination of trichloroethylene and fluorination of intermediate of the former reaction (HCFC-133a)

摘要翻译： 本发明涉及一种由锌促进的共沉淀Cr2O3 / Al2O3催化剂的制备方法，所述方法包括使用NH 4 OH，NaOH或KOH作为碱，从相应的三价金属盐溶液中共沉淀铬和铝金属氢氧化物，随后 通过焙烧以使无定形的混合氧化物预催化剂从其中浸渍活性促进量的锌化合物。 该催化剂用于通过氟化三氯乙烯制备HFC-134a和氟化前反应的中间体（HCFC-133a）

公开(公告)号：US07982074B2

公开(公告)日：2011-07-19

申请号：US11643767

申请日：2006-12-22

申请人： Jampani Madhusudana Rao ,  Shanthan Pamulaparthy Rao ,  Siva Attaluri Prasad ,  Banda Narasaiah ,  Narayan Sripathi Reddy ,  Radhakrishnan Kuppusamy ,  Vijayakumar Veeramachaneni ,  Patil Kamalakar Sukhadeorao ,  Rambabu Yadla ,  Koosampally Srinivas ,  Leelakrishna Kondaveti

发明人： Jampani Madhusudana Rao ,  Shanthan Pamulaparthy Rao ,  Siva Attaluri Prasad ,  Banda Narasaiah ,  Narayan Sripathi Reddy ,  Radhakrishnan Kuppusamy ,  Vijayakumar Veeramachaneni ,  Patil Kamalakar Sukhadeorao ,  Rambabu Yadla ,  Koosampally Srinivas ,  Leelakrishna Kondaveti

IPC分类号： C07C19/08 ,  C07C17/21 ,  C07C17/20

CPC分类号： C07C19/08 ,  B01J23/06 ,  B01J23/26 ,  B01J37/0201 ,  B01J37/03 ,  B01J37/26 ,  C07C17/206 ,  C07C17/21 ,  Y02P20/582 ,  C07C19/12

摘要： The present invention relates to a process for preparing a co-precipitated Cr2O3/Al2O3 catalyst promoted by Zinc, said process comprising co-precipatation of chromium and aluminum metal hydroxides from corresponding trivalent metal salt solutions using NH4OH, NaOH or KOH as a base and followed by calcination to give mixed oxide precatalyst in amorphous from which is impregnated with an activity promoting amount of Zinc compound. The catalyst is used for the preparation of HFC-134a by fluorination of trichloroethylene and fluorination of intermediate of the former reaction (HCFC-133a).

摘要翻译： 本发明涉及一种由锌促进的共沉淀Cr2O3 / Al2O3催化剂的制备方法，所述方法包括使用NH 4 OH，NaOH或KOH作为碱，从相应的三价金属盐溶液中共沉淀铬和铝金属氢氧化物，随后 通过煅烧得到无定形的混合氧化物预催化剂，其中浸渍有活性促进量的锌化合物。 催化剂用于通过三氯乙烯的氟化和前一反应的中间体（HCFC-133a）的氟化制备HFC-134a。

公开(公告)号：US20070106100A1

公开(公告)日：2007-05-10

申请号：US11643767

申请日：2006-12-22

申请人： Jampani Rao ,  Shanthan Rao ,  Siva Prasad ,  Banda Narasaiah ,  Narayan Reddy ,  Radhakrishnan Kuppusamy ,  Vijayakumar Veeramachaneni ,  Patil Sukhadeorao ,  Rambabu Yadla ,  Koosampally Srinivas ,  Leelakrishna Kondaveti

发明人： Jampani Rao ,  Shanthan Rao ,  Siva Prasad ,  Banda Narasaiah ,  Narayan Reddy ,  Radhakrishnan Kuppusamy ,  Vijayakumar Veeramachaneni ,  Patil Sukhadeorao ,  Rambabu Yadla ,  Koosampally Srinivas ,  Leelakrishna Kondaveti

IPC分类号： C07C19/08

CPC分类号： C07C19/08 ,  B01J23/06 ,  B01J23/26 ,  B01J37/0201 ,  B01J37/03 ,  B01J37/26 ,  C07C17/206 ,  C07C17/21 ,  Y02P20/582 ,  C07C19/12

摘要： The present invention relates to a process for preparing a co-precipitated Cr2O3/Al2O3 catalyst promoted by Zinc, said process comprising co-precipatation of chromium and aluminum metal hydroxides from corresponding trivalent metal salt solutions using NH4OH, NaOH or KOH as a base and followed by calcination to give mixed oxide precatalyst in amorphous from which is impregnated with an activity promoting amount of Zinc compound. The catalyst is used for the preparation of HFC-134a by fluorination of trichloroethylene and fluorination of intermediate of the former reaction (HCFC-133a).

摘要翻译： 本发明涉及一种由锌促进的共沉淀的Cr 2 O 3/3 / Al 2 O 3 N 3催化剂的制备方法，所述方法包括共 使用NH 4 OH，NaOH或KOH作为碱，从相应的三价金属盐溶液中沉淀铬和铝金属氢氧化物，然后煅烧，得到无定形的混合氧化物预催化剂，用活性促进量的锌化合物浸渍。 催化剂用于通过三氯乙烯的氟化和前一反应的中间体（HCFC-133a）的氟化制备HFC-134a。