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公开(公告)号:IN150187B
公开(公告)日:1982-08-14
申请号:IN535CA1978
申请日:1978-05-17
Applicant: ENGELHARD CORP
Inventor: CARE C , POLIKSKY M , HINDIN S , KOSEO J
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公开(公告)号:FR2227049B1
公开(公告)日:1978-08-04
申请号:FR7414646
申请日:1974-04-26
Applicant: NAT DISTILLERS CHEM CORP
Abstract: A process is described for the regeneration of palladium metal catalysts which are useful in the process for the synthesis of esters from olefins, carboxylic acids and molecular oxygen. The regeneration process comprises the following sequential steps: (a) washing the used catalyst with an aqueous hydrochloric acid solution containing hydrazine; (b) partially drying the catalyst to a moisture content of about 65 to 95% of saturation; (c) chlorinating the partially dried catalyst with chloride gas; (d) treating the chlorinated catalyst with moist air to remove excess chlorine and to insure even moisture distribution; (e) reducing the chlorinated catalyst by contact with an aqueous alkaline reducing solution; (f) washing the reduced catalyst to remove residual chlorides; and (g) drying the resulting regenerated catalyst. One particular application for the process is the regeneration of an alumina supported palladium metal-containing catalyst which has been employed in the vapor phase synthesis of unsaturated esters from olefins, organic acids and oxygen.
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公开(公告)号:AU7803475A
公开(公告)日:1976-08-12
申请号:AU7803475
申请日:1975-02-10
Applicant: RAFFINAGE CIE FRANCAISE
Inventor: WEISANG JOSEPH-EDOUARD , ENGELHARD PHILIPPE
IPC: B01J23/62 , B01J23/64 , B01J23/652 , B01J23/656 , B01J27/04 , B01J27/08 , B01J27/13 , B01J27/135 , B01J37/20 , C10G35/09 , B01J11/08 , C10G13/10
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公开(公告)号:AU7766275A
公开(公告)日:1976-07-29
申请号:AU7766275
申请日:1975-01-28
Applicant: UNION CARBIDE CORP
Inventor: BHASIN MADAN MOHAN
IPC: C07C29/151 , C07C29/158 , C07C31/08 , B01J11/08
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公开(公告)号:AU7280774A
公开(公告)日:1976-03-04
申请号:AU7280774
申请日:1974-08-30
Applicant: HALCON INTERNATIONAL INC
Inventor: HEWLETT COLIN
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公开(公告)号:AU6713574A
公开(公告)日:1975-10-02
申请号:AU6713574
申请日:1974-03-26
Applicant: EXXON RESEARCH ENGINEERING CO
Inventor: SINFELT JOHN HENRY , BARNETT ALLAN EMERSON
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