| 发明名称 |
PROCESS FOR THE PREPARATION OF 1,1,1,2-TETRAFLUOROETHANE |
| 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)
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| 申请公布号 |
US2011201495(A1) |
申请公布日期 |
2011.08.18 |
| 申请号 |
US201113095077 |
申请日期 |
2011.04.27 |
| 申请人 |
COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH |
发明人 |
RAO JAMPANI MADHUSUDANA;RAO SHANTHAN PAMULAPARTHY;PRASAD SIVA ATTALURI;NARASAIAH BANDA;REDDY NARAYAN SRIPATHI;KUPPUSAMY RADHAKRISHNAN;VEERAMACHANENI VIJAYAKUMAR;SUKHADEORAO PATIL KAMALAKAR;YADLA RAMBABU;SRINIVAS KOOSAMPALLY;KONDAVETI LEELAKRISHNA |
| 分类号 |
B01J23/24;B01J27/138;B01J23/06;B01J23/26;B01J37/02;B01J37/03;B01J37/26;C07B61/00;C07C17/087;C07C17/20;C07C17/21;C07C19/08;C07C19/12 |
主分类号 |
B01J23/24 |
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