摘要
以硼酸三乙酯、N-羟甲基丙烯酰胺、N,N-二羟乙基十二烷基胺等为原料,直接引发合成了新型高分子硼酸酯表面活性剂PBE,并用FT-IR、1H NMR和GPC进行了结构表征,考察了PBE在邻氯硝基苯催化加氢反应中的应用。结果表明,PBE具有较好的抗水解性、表面活性和分散稳定性,25℃时PBE溶液临界胶束浓度为0．12 g／L,γCMC为31．2 mN／m;制备的水溶性纳米镍粒度均匀,粒径在4-6 nm之间,催化加氢一次反应转化率为100％,催化剂回收套用后,二次反应转化率为90．2％,优于CTAB、SDS和OP-10。
A novel polymeric borate surfactant was synthesized by direct polymerization of N-hydroxymethyl acrylamide, triethyl borate and N,N-dihydroxyethyl dodecylamine, characterized with FT-IR, ^1 H NMR and GPC and used in the preparation of nickel nanoparticles for the hydrogenation of chloronitrobenzene. The results showed that PBE had good characteristics of anti-hydrolysis, surface activity and dispersion stability; CMC and YCMC Of PBE at 25 ℃ were 0. 12 g/L and 31.2 mN/m, respectively. Water soluble nickel nanoparticles prepared by the addition of PBE has uniform size distribution in the range of 4 - 6 nm. The conversion of chloronitrobenzene hydrogenation catalyzed by the nickel nanoparticles was 100% in the first run, and remained 90.2% catalyzed by the recycled catalyst. PBE is superior to CTAB, SDS and OP-10 in the preparation of the catalyst.
出处
《精细石油化工》
CAS
CSCD
北大核心
2007年第2期5-8,共4页
Speciality Petrochemicals
关键词
高分子表面活性剂
硼酸酯催化加氢
水溶性纳米镍
polymeric surfactant
borate
catalytic hydrogenation
water soluble nickel nanoparticle
