发明名称 |
REACTIVATION OF SPENT CHROMIA-ALUMINA CATALYST BY ZINC OXIDE DOPING |
摘要 |
A method for the reactivation of aged chromia-alumina dehydrogenation catalyst which involves doping the aged catalyst with minor amounts of zinc oxide, preferrably in the range of about 0.35% zinc oxide to 1.35% zinc oxide on the catalyst. The zinc oxide is added to the aged catalyst preferrably by impregnation by immersion or spraying of a zinc nitrate solution, followed by drying and heat treating. Alternatively the zinc oxide addition can be accomplished by use of a volatile organic zinc compound added to the saturated feedstock and subsequent air regeneration of the catalyst in situ without removal of the catalyst from the reactor. |
申请公布号 |
DE3173983(D1) |
申请公布日期 |
1986.04.10 |
申请号 |
DE19813173983 |
申请日期 |
1981.09.10 |
申请人 |
AIR PRODUCTS AND CHEMICALS, INC. |
发明人 |
AMBS, WILLIAM JOSEPH;MITCHELL, MAURICE MCCLELLAN, JR. |
分类号 |
C07C5/333;B01J23/26;B01J23/92;B01J38/48;C07B61/00;C07C1/00;C07C11/02;C07C15/40;C07C67/00;(IPC1-7):B01J23/92 |
主分类号 |
C07C5/333 |
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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