发明名称 |
PROCESS FOR MAKING NITRILES |
摘要 |
<p>An improved multi-reaction zone process provides for improved nitrile product quality and yield. In a first reaction zone, 1,3-butadiene is reacted with hydrogen cyanide in the presence of a catalyst to produce pentenenitriles comprising 3- pentenenitrile and 2-methyl-3-butenenitrile. In a second reaction zone, 2-methyl-3- butenenitrile, recovered from the first reaction zone, is isomerized to 3-pentenenitrile. In an optional third reaction zone, 3-pentenenitrile recovered from the first and second reaction zones is reacted with hydrogen cyanide in the presence of a catalyst and a Lewis acid to produce adiponitrile. A portion of the first catalyst is purified and recycled. Zero valent nickel is added to the purified first catalyst before it is recycled.</p> |
申请公布号 |
WO2012005912(A1) |
申请公布日期 |
2012.01.12 |
申请号 |
WO2011US40656 |
申请日期 |
2011.06.16 |
申请人 |
INVISTA TECHNOLOGIES S.A. R.L.;MOERBE, LARRY, E;CHAO, TSENG, H |
发明人 |
MOERBE, LARRY, E;CHAO, TSENG, H |
分类号 |
C07C253/10;C07C255/04;C07C255/07 |
主分类号 |
C07C253/10 |
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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