Co/SiO_2催化剂合成重质烃的反应性能  

Performance of Co/SiO_2 Catalyst for the Synthesis of Heavy Hydrocarbons in FT Reaction

作　　者：高海燕[1] 陈建刚[1] 相宏伟[1] 杨继礼[1] 李永旺[1] 孙予罕[1] 

机构地区：[1]中国科学院山西煤炭化学研究所煤转化国家重点实验室,太原030001

出　　处：《催化学报》2001年第2期133-137,共5页

基　　金：国家重点基础研究规划项目!资助 (G19990 2 2 40 2 ) .

摘　　要：对近期筛选出的一种重质烃合成反应性能良好的Co/SiO2 催化剂进行了 5 0 0h的寿命试验 ,考察了在不同反应温度、压力和空速条件下催化剂的反应性能 .结果表明 ,随着反应的进行 ,催化剂合成重质烃的选择性基本保持不变 ,但催化剂的活性缓慢下降 ;经原位再生后 ,催化剂活性可基本恢复到原来的水平 .烃产物主要由烷烃组成 ,C5+ 中烯烃仅占 2 2 5 % ,产物主要集中在C12 ～C2 0 馏分段 ,水相产物中含 3 5 6 %～ 6 5 6 %的有机含氧化合物 。A Co/SiO 2 catalyst is prepared and used in F T reaction for the synthesis of heavy hydrocarbons. The effects of various operation conditions including temperature, pressure and space velocity on its performance are investigated and a test for the catalyst stability is carried out for 500 h. The experimental results show that the C 5+ selectivity has only a little change on stream, but CO conversion gradually decreases. Thus the reaction temperature must be raised slowly to maintain the catalyst activity. After H 2 regeneration in situ , the activity is approximately recovered to the original level. Hydrocarbon products are mainly composed of alkane and the content of alkene in C 5+ hydrocarbons is about 2 25%. C 12 ～C 20 distillate range is superior in hydrocarbon products. The products in water phase contain 3 56%～6 56% of oxygenates which are mainly lower carbon number alcohols.

关 键 词：费-托合成 钴基催化剂 重质烃 二氧化硅 柴油 合成 合成气 煤油 催化性能 

分 类 号：O643[理学—物理化学]