摘要
本文在５６３Ｋ、６ＭＰａ及Ｈ＿２／ＣＯ＝２的条件下，考察了Ｃｕ／Ｃｏ比不同的几个ＲａｎｅｙＣｕ－Ｃｏ催化剂的反应性能。结果表明：ＲａｎｅｙＣｕ－Ｃｏ催化剂上ＣＯ加氢产物主要为Ｃ＿１－Ｃ＿６正构醇及Ｃ＿１－Ｃ＿８正构烃。烃和醇产品的分布均符合Ｓｃｈｕｌｚ－Ｆｌｏｒｙ方程。但醇产品的链增长几率（０．３－０．５５）均小于烃产品的值（０．６－０．７５）。Ｃｕ／Ｃｏ比不同的催化剂在进入活性稳定区之前，均经过了一个不尽相同的活性波动区，活性趋于稳定所需时间随Ｃｕ／Ｃｏ比增大而缩短。Ｃｕ／Ｃｏ＝０．３－１．５（原子比）时，就醇收率而言，ＲａｎｅｙＣｕ－Ｃｏ催化剂明显高于共沉淀Ｃｕ－Ｃｏ催化剂，Ｃｕ／Ｃｏ＝０．８（原子比）时，稳定醇收率达０．５７ｇ·ｇ￣（－１）·ｈ￣（－１）。
Raney Cu-Co catalysts of different Cu/Co ratios have been tested for COhydrogenation under 563K , 6MPa , and H_2/CO=2. The products formed on Raney Cu-Cocatalysts are mainly C_1-C_6 normal alcohols and C_1-C_8 hydrocarbons. The productdistribution follows Schulz-Flory equation. The chain growth factor for alcohols(0.3-0.55 ) is less than that for hydrocarbons ( 0.6-0. 75 ). Before reaching a stable zone, theactivities of all the catalysts pass through a fluctuating zone, and catalysts with higher Cu/Co ratio can reach the stable zone more quickly. At Cu/Co=0.3-1.5(atomic ratio), thealcohol yield on Raney Cu-Co catalysts is apparently higher than that on coprecipitated Cu-Co catalysts; At Cu/Co=0.8(atomic ratio) , the stable alcohol yield on Raney Cu-Cocatalysts reaches 0. 57g·g￣(-1)·h￣(-1).
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
1994年第4期343-348,共6页
Journal of Fuel Chemistry and Technology
基金
国家重大自然科学基金
国家煤转化实验室资助
