LB-16有机硅杂化分子筛催化剂的制备及其在长链烷基苯合成中的应用  

Synthesis and catalysis of organosilicon hybrid zeolite for the selective synthesis of linear alkyl benzene

作　　者：胥明 高焕新[1] 姚晖[1] 王高伟[1] Xu Ming;Gao Huanxin;Yao Hui;Wang Gaowei(State Key Laboratory of Green Chemical and Industrial Catalysis,Shanghai Research Institute of Petrochemical Technology,SINOPEC,Shanghai201208)

机构地区：[1]中国石油化工股份有限公司上海石油化工研究院,绿色化工与工业催化国家重点实验室,上海201208

出　　处：《工业催化》2017年第11期59-64,共6页Industrial Catalysis

摘　　要：长链烷基苯(LAB)是制备合成洗涤剂烷基苯磺酸钠的主要原料,传统上LAB采用无机液体酸(HF)为催化剂将苯和长链烯烃烷基化而制得。在LAB的诸多异构体中,2-LAB因其更高的溶解性和可降解性而更受欢迎。使用低温成胶的策略,以水热合成法合成LB-16有机硅杂化分子筛催化剂,并考察其在LAB合成中的催化性能。结果表明,在反应温度190℃、空速0.2 h-1、苯烯物质的量比15∶1条件下,经过1 000 h催化试验,1-十二烯转化率大于99%,2-LAB选择性51%。LB-16有机硅杂化分子筛催化剂对苯与1-十二烯合成反应具有较好的催化活性和稳定性,同时对2-LAB具有较高的选择性,具有工业化应用前景。Linear alkyl benzenes(LAB),the primary intermediates in detergent industry,are commercially manufactured by the alkylation of benzene with n-alkenes under the catalyst of HF or AlCl3.Among LAB isomers,2-phenyl isomers(2-LAB)are the most favorable materials for the production of ecofriendly domestic and industrial detergents because of their high solubility and biodegradability.Here,zeolite LB-16is prepared from the mixture of the inorganic silica and organic silane by hydrothermal method.Then,organosiliconzeolite is applied for the alkylation of benzene with1-dodecene.The results show extremely high1-dodecene conversion at463K when benzene/olefin is15and WHSV is02h-1.Moreover,the conversion maintains at99%and2-LAB isomer selectivity is about51%during1000h time on stream,showing adequate catalytic stability for commercial viability.It is anticipated that zeolite LB-16may see applications in LAB production and industrial acid catalyzed reactions.

关 键 词：精细化学工程 长链烷基苯 固体酸 有机硅沸石 烷基化 1-十二烯 

分 类 号：TQ426.94[化学工程] TQ241.1