Sulfonic acid functionalized hyperbranched poly(ether sulfone) as a solid acid catalyst
Sulfonic acid functionalized hyperbranched poly(ether sulfone) as a solid acid catalyst
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DOI：
10.1039/c4gc00188e
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发表时间：
2014-06
期刊：
影响因子：
9.8
通讯作者：
Y. Nabae;Jie Liang;Xuhui Huang;T. Hayakawa;M. Kakimoto
中科院分区：
文献类型：
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作者：
Y. Nabae;Jie Liang;Xuhui Huang;T. Hayakawa;M. Kakimoto
研究了磺酸功能化超支化聚醚砜（SHBPES）作为一种新型固体酸催化剂。测试了不同分子量的 SHBPES 的乙酸和 1-丁醇之间的酯化反应。 SHBPES 的 SO3H 端基作为催化活性位点，但所有测试的 SHBPES 在当前反应条件下都是完全或部分溶解的。为了克服溶解度问题，将SHBPES接枝到炭黑上，这种材料SHBPES/CB表现出相当好的催化活性和良好的可回收性。 SHBPES接枝到炭黑上后，周转频率有所下降，但仍比Amberlyst®-15好得多。 SHBPES/CB 还针对苯甲醚的 Friedel–Crafts 烷基化进行了测试，在 130 °C 的操作条件下，其耐久性似乎比 Amberlyst®-15 好得多。
Sulfonic acid functionalized hyperbranched poly(ether sulfone) (SHBPES) was studied as a novel type of solid acid catalyst. Various molecular weights of SHBPESs were tested for the esterification reaction between acetic acid and 1-butanol. The SO3H terminal groups of the SHBPESs work as catalytically active sites, but all tested SHBPESs are totally or partially soluble under the current reaction conditions. To overcome the solubility problem, SHBPES was grafted onto carbon black, and this material, SHBPES/CB, shows fairly good catalytic activity and promising recyclability. The turnover frequency of SHBPES decreased upon grafting it onto carbon black, but it was still much better than that of Amberlyst®-15. SHBPES/CB was also tested for the Friedel–Crafts alkylation of anisole and its durability seems to be much better than that of Amberlyst®-15 under the operating conditions at 130 °C.