摘要
从裂解汽油中回收苯乙烯是其升值利用的开发热点,而富含苯乙烯的裂解C_8馏分选择性加氢除去苯乙炔是该技术的关键之一。采用所研制的SHPA镍基催化剂进行了苯乙炔选择加氢的研究,在固定床反应器中分别考察了催化剂组成、助剂、孔结构和反应工艺条件对加氢反应的影响,并对催化剂和反应产物进行了分析表征。结果表明,在适宜条件下苯乙炔加氢转化率可达100%、而苯乙烯加氢损失率小于3%,催化剂活性选择性和稳定性良好,具有良好的工业应用前景。
The recovery of styrene from pyrolysis gasoline is the hot spot that raises the added value, the selective hydrogenation of cracking C8 fraction rich in styrene to removal of phenylacetylene is one of the keys to this technology. The prepared SHPA nickel-based catalysts were used to catalyze selective hydrogenation of phenylacetylene. Effects of the catalyst composition, additives, the pore structure of supports and reaction conditions on the hydrogenation of phenylacetylene were investigated in a fixed bed reactor. The catalysts were characterized and the reaction products were analyaed. The results showed that the phenylacetylene conversion was 100%, while styrene hydrogenation loss was less than 3%. The activity, selectivity and stability of SHPA catalyst can satisfy the need of removal of phenylacetylene in C8 fraction of pyrolysis gasoline by selective hydrogenation for commercial application.
出处
《化学反应工程与工艺》
CAS
CSCD
北大核心
2013年第4期301-306,共6页
Chemical Reaction Engineering and Technology
关键词
选择加氢
苯乙炔
裂解汽油
苯乙烯
镍催化剂
selective hydrogenation
phenylacetylene
pyrolysis gasoline
styrene
nickel catalyst
