摘要
钛硅分子筛/H2O2体系催化酮氨肟化反应合成肟的过程中,产物肟的反应行为直接影响氨肟化过程的反应效率和操作稳定性.在Ti-MWW/H2O2体系催化丁酮氨肟化反应中研究了产物丁酮肟的反应行为,发现Ti-MWW和H2O2的共同作用促使丁酮肟发生水解,生成丁酮和氮氧化物,使得反应体系从碱性变成了酸性.TS-1/H2O2体系及产物环己酮肟均存在类似的现象.
In the preparation process of oxime over the titanosilicate/H2O2 system, the reaction performance of oxime influenced the efficiency and stability of the process directly. The reaction behavior of methyl ethyl ketone oxime produced from ammoximation of methyl ethyl ketone catalyzed by the Ti-MWW/H2O2 system was studied. The Ti-MWW and H2O2 together resulted in the hydrolysis of methyl ethyl ketone oxime to methyl ethyl ketone, NOx, etc. Thus, the system was from alkalescence to acidity. The same phenomena also existed in the TS-1/H2O2 system for cyclohexanone oxime production. This experimental result was beneficial for the increase of the efficiency and the stability of the process over the titanosilicate/H2O2 system.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
2010年第1期95-99,共5页
基金
国家高技术研究发展计划(863计划
2007AA03Z342
2008AA030801)
上海市科委基金(06SR07101)
国家重点基础研究发展计划(973计划
2006CB202508)
上海市重点学科建设项目基金(B409)
关键词
钛硅分子筛
过氧化氢
丁酮
丁酮肟
环己酮
环己酮肟
水解
titanosilicate molecular sieve
hydroperoxide
methyl ethyl ketone
methyl ethyl ketone oxime
cyclohexanone
cyclohexanoneoxime
hydrolysis
