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Adjusting the Acid Strength of Hybrid Solid Acids in Confined Nanospace
Zhang, Xiaomin1,2; Xiao, Bing1; Chen, Jingjing1; Guo, Miao1,2; Yang, Qihua1
关键词Solid Acid Acid Strength Yolk-shell Sulfonated Polystyrene Esterification
刊名TOPICS IN CATALYSIS
2016-12-01
DOI10.1007/s11244-016-0696-6
59期:19-20页:1748-1756
收录类别SCI ; ISTP
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Applied ; Chemistry, Physical
关键词[WOS]ION-EXCHANGE-RESINS ; ETHYL OCTYL ETHER ; HETEROGENEOUS CATALYSIS ; MESOPOROUS SILICA ; PROBE MOLECULES ; STATE NMR ; ESTERIFICATION ; CYCLOHEXENE ; SELECTIVITY ; ALKYLATION
英文摘要The acid strength is one of the most important issues in solid acid. Herein, we report an efficient strategy for controlling the acid strength of sulfonated polystyrene (PS-SO3H) within mesosilica hollow nanospheres. The sulfonation of PS@SiO2 core-shell nanospheres with surfactant un-removed, partially removed and totally removed results in the formation of PS-SO3H@SiO2 with core-shell, yolk-shell and hollow nanostructures, respectively. The results of P-31 MAS NMR using triethylphosphine oxide as a base probe molecule show that the acid strength of solid acids depends on their nanostructures. The yolk-shell and hollow nanostructures respectively afford the strongest and the weakest acid strength, suggesting the different aggregation degree of PS-SO3H confined in nanospace during the sulfonation process. All the solid catalysts afford much higher activity than Amberlyst resin in esterification reaction. The yolk-shell nanostructured solid acid with the strongest acid strength shows the highest activity, suggesting the positive effect of the acid strength on the catalytic activity.
语种英语
WOS记录号WOS:000388825800009
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/150447
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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GB/T 7714
Zhang, Xiaomin,Xiao, Bing,Chen, Jingjing,et al. Adjusting the Acid Strength of Hybrid Solid Acids in Confined Nanospace[J]. TOPICS IN CATALYSIS,2016,59(19-20):1748-1756.
APA Zhang, Xiaomin,Xiao, Bing,Chen, Jingjing,Guo, Miao,&Yang, Qihua.(2016).Adjusting the Acid Strength of Hybrid Solid Acids in Confined Nanospace.TOPICS IN CATALYSIS,59(19-20),1748-1756.
MLA Zhang, Xiaomin,et al."Adjusting the Acid Strength of Hybrid Solid Acids in Confined Nanospace".TOPICS IN CATALYSIS 59.19-20(2016):1748-1756.
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