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题名: Hydroesterification of styrene derivatives catalyzed by an acidic resin supporting palladium complexes
作者: He, Zhenhong; Hou, Zhenshan; Luo, Yanping; Dilixiati, Yierxiati; Eli, Wumanjiang
刊名: CATALYSIS SCIENCE & TECHNOLOGY
发表日期: 2014
DOI: 10.1039/c3cy00842h
卷: 4, 期:4, 页:1092-1103
收录类别: SCI
摘要: Pd-TPPTS-OTPPTS (denoted as Pd-P-OP, where TPPTS was the sodium salt of tri(m-sulfophenyl)phosphine and OTPPTS was the oxidized form of TPPTS) complexes supported on acidic resins (denoted as Pd-P-OP/resin) were prepared and employed as versatile heterogeneous catalysts for the hydroesterification of vinyl-aromatics with alcohols. The catalysts were characterized by the methods of FT-IR, XPS, N2 physisorption, XRD, TGA, SEM and 31P NMR. According to the 31P NMR results, there was a weak coordination between OTPPTS and the Pd sites. Consequently, OTPPTS was a weak ligand to the Pd sites and thus dissociated easily, acting as a protective agent of the vacant coordination site of the Pd metal sites, which allowed the substrates more access to the metal sites. In the hydroesterification of styrene, the distribution of the branched and linear esters was remarkably impacted by adding an appropriate amount of OTPPTS and the acidic resin supports. A high yield and excellent selectivity towards the branched ester were obtained when OTPPTS and TPPTS were used in equimolar amounts under optimized reaction conditions. The generality and recyclability of the catalyst for the hydroesterification of vinyl-aromatics were also examined. In addition, the poisoning and hot filtration tests indicated that Pd(0) acted as the active species in a truly heterogeneous way. A Pd-hydride mechanism was proposed for the hydroesterification over the Pd-P-OP/LSI-600 catalyst.
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内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/3830
Appears in Collections:新疆维吾尔自治区精细化工工程技术研究中心_期刊论文

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作者单位: Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China;Univ Chinese Acad Sci, Beijing 100049, Peoples R China;E China Univ Sci & Technol, Res Inst Ind Catalysis, Key Lab Adv Mat, Shanghai 200237, Peoples R China

Recommended Citation:
He, Zhenhong,Hou, Zhenshan,Luo, Yanping,et al. Hydroesterification of styrene derivatives catalyzed by an acidic resin supporting palladium complexes[J]. CATALYSIS SCIENCE & TECHNOLOGY,2014,4(4):1092-1103.
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