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    • 2. 发明授权
    • Process for the production of unsaturated aliphatic nitriles
    • 生产不饱和脂肪硝酸盐的方法
    • US3869500A
    • 1975-03-04
    • US38500373
    • 1973-08-21
    • ASAHI CHEMICAL IND
    • KOMINAMI NAOYANAKAJIMA HITOSHIMIYATA SEIJIKIMURA TAKEOCHONO MASAZUMISAKURAI TOKIO
    • B01J23/40B01J23/44B01J23/56B01J23/58B01J23/63B01J37/20C07C121/04C07C121/02
    • B01J23/63B01J23/40B01J23/44B01J23/56B01J23/58B01J37/20C07C253/10Y02P20/52C07C255/08C07C255/07C07C255/10
    • Process for the production of unsaturated aliphatic nitriles selected from acrylonitrile, methacrylonitrile, crotononitrile, alpha-ethylacrylonitrile, beta-ethylacrylonitrile, alpha, betadimethylacrylonitrile, beta, beta-dimethylacrylonitrile, chloroacrylonitrile and fumaronitrile, which comprises contacting a gas mixture consisting essentially of an olefinic compound selected from ethylene, propylene, normal butylene, isobutylene and vinyl chloride, hydrogen cyanide and oxygen or a molecular oxygen-containing gas at a temperature of 100* to 500*C with a catalyst selected from palladium metal, chloride, bromide, iodide, cyanide, thiocyanide, oxide, hydroxide, sulfide, sulfate, nitrate, phosphate, hypochlorite, chlorite, chlorate, bromate, iodate, formate, acetate, mono-chloroacetate and oxalate which has been treated with a reducing sulfur compound at a temperature of from -10* to 1,200*C. The treatment with a reducing sulfur compound remarkably improves the catalytic life. Hydrogen sulfide and sulfur dioxide are especially preferred as reducing sulfur compound.
    • 用于生产选自丙烯腈,甲基丙烯腈,巴豆腈,α-乙基丙烯腈,β-乙基丙烯腈,α,β-二甲基丙烯腈,β,β-二甲基丙烯腈,氯丙烯腈和富马腈的不饱和脂族腈的方法,其包括将基本上由 选自乙烯,丙烯,正丁烯,异丁烯和氯乙烯的烯烃化合物,氰化氢和氧气或分子氧气体在100至500℃的温度下与选自钯金属,氯化物,溴化物,碘化物 ,氰化物,硫氰酸盐,氧化物,氢氧化物,硫酸盐,硝酸盐,磷酸盐,次氯酸盐,亚氯酸盐,氯酸盐,溴酸盐,碘酸盐,甲酸盐,乙酸盐,单氯乙酸盐和草酸盐,其在还原硫化合物的温度 -10℃〜1200℃。用还原硫化合物处理显着提高了催化剂的含量 fe。 特别优选硫化氢和二氧化硫作为还原硫化合物。