发明名称 |
TWO-STAGE CALCINATION FOR CATALYST PRODUCTION |
摘要 |
The invention relates to an improved process for producing a catalyst useful for the epoxidation of ethylene to ethylene oxide. In forming the catalyst, a silver-impregnated support is subjected to two calcinations. The support is subjected to a first calcination in a first atmosphere comprising air. Next the support is subjected to a second calcination in a second atmosphere which is substantially entirely comprised of inert gas, and which second atmosphere is substantially absent of hydrogen. This two-stage calcination produces an improved catalyst which contains fewer organics left over under standard conditions of air calcination alone, while costing less than calcination in an inert gas alone. |
申请公布号 |
US2012041217(A1) |
申请公布日期 |
2012.02.16 |
申请号 |
US201113280962 |
申请日期 |
2011.10.25 |
申请人 |
BHISE VIJAY S.;BORTINGER ARIE;ALLEN STEPHEN R.;SD LIZENZVERWERTUNGSGESELLSCHAFT MBH & CO. KG |
发明人 |
BHISE VIJAY S.;BORTINGER ARIE;ALLEN STEPHEN R. |
分类号 |
C07D301/03;B01J23/50;B01J23/66;B01J23/68 |
主分类号 |
C07D301/03 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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