化工学报2013，Vol.64Issue(3)：949-954,6.DOI:10.3969/j.issn.0438-1157.2013.03.023
钙改性MCM-22分子筛催化剂上单十二烷基磷酸酯的绿色合成
Green synthesis of monododecylphosphate over MCM-22 molecular sieve modified by calcium
摘要
Abstract
Ca/HMCM-22 and CaHMCM-22 zeolite catalysts were prepared by impregnation and ion exchange respectively. The catalysts were characterized by XRD, TPD, FT-IR, and ICP. When CaSO4 loading was less than 6. 5%, CaSO4 could be highly dispersed on HMCM-22 zeolite. A few variations in the strength and content of weak acid, and a slightly decrease of the content of strong acid were found in the two catalysts. However, the strength and content of weak and strong base on CaHMCM-22 were more than those on Ca/HMCM-22 after modification. The two catalysts exhibited good catalytic performance for the synthesis of monododecylphosphate by esterification of phosphoric acid with equimolar lauryl alcohol. The catalytic activity over Ca/HMCM-22 zeolite was higher than the catalytic activities of HMCM-22 and Ca/NaMCM-22 zeolite, CaSO4 in synergy with acid sites and base sites of zeolite catalyst accelerated the esterification. The catalytic activity over CaHMCM-22 exchanged 3 times was also better than those of HMCM-22 and CaNaMCM-22 zeolite. Combined with the results of characterization and esterification, the presence of acidic and basic sites promoted effectively the synthesis of monododecylphosphate.关键词
浸渍/离子交换/MCM-22分子筛/单十二烷基磷酸酯Key words
impregnation/ ion exchange/ MCM-22 zeolite/ monododecylphosphate分类
化学化工引用本文复制引用
张文飞,梁金花,李宁,刘艳秋,任晓乾,姜岷..钙改性MCM-22分子筛催化剂上单十二烷基磷酸酯的绿色合成[J].化工学报,2013,64(3):949-954,6.基金项目
国家重点基础研究发展计划项目(2009CB724701). （2009CB724701）
