Tungsten-doped siliceous mesocellular foams-supported platinum catalyst for glycerol hydrogenolysis to 1,3-propanediol
Tungsten-doped siliceous mesocellular foams-supported platinum catalyst for glycerol hydrogenolysis to 1,3-propanediol
复制标题
钨掺杂硅质介孔泡沫负载铂催化剂用于甘油氢解制1,3-丙二醇
DOI：
10.1016/j.apcatb.2021.120428
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发表时间：
2021-06-08
影响因子：
22.1
通讯作者：
Zong, Baoning
中科院分区：
文献类型：
--
作者：
Cheng, Shijie;Fan, Yiqiu;Zong, Baoning
通过改变W-MCFs合成过程中溶胀剂1，3，5-三甲苯（TMB）与模板剂P123的质量比，制备了一系列钨掺杂硅质介孔泡沫（W-MCFs）负载铂催化剂（Pt/W-MCFs）。在甘油氢解反应中，Pt/W-MCFs催化剂对1，3-丙二醇（1，3-PDO）具有较高的活性和选择性，这归因于W-MCFs的三维连续大孔结构有利于反应物的进入和产物的逸出。在Pt/W-MCFs催化剂中，TMB/P123比为1.5的Pt/W-1.5MCFs催化剂具有最好的活性和1，3-PDO选择性。值得注意的是，Pt/W-1.5MCFs催化剂在高甘油转化率下提供了65%的高1，3-PDO选择性，因此提供了63%的最高1，3-PDO产率。Pt/W-MCFs催化剂催化性能的差异主要是由于Pt纳米颗粒与金属氧化物界面上的单点四面体（WO 4）-O-V物种之间的协同作用。
By varying the mass ratio of the swelling agent 1,3,5-trimethylbenzene (TMB) to the template P123 during the synthesis of the W-MCFs, we prepared a series of tungsten-doped siliceous mesocellular foams (W-MCFs) supported Pt catalysts (Pt/W-MCFs). In glycerol hydrogenolysis, the Pt/W-MCFs catalysts were highly active and selective to 1,3-propanediol (1,3-PDO), attributable to the 3-dimensional continuous large pore structure of the W-MCFs that facilitates the entry of the reactant and the escape of the product. Among the Pt/W-MCFs catalysts, the Pt/W-1.5MCFs catalyst with the TMB/P123 ratio of 1.5 exhibited the best activity and 1,3-PDO selectivity. Remarkably, the Pt/W-1.5MCFs catalyst afforded a high 1,3-PDO selectivity of 65 % at high glycerol conversion, thus rendering the highest 1,3-PDO yield of 63 %. The synergy between the Pt nanoparticles and the single-sited tetrahedral (WO4)-O-V species at the metal-oxide interface is proposed to be responsible for the differences in the catalytic performances among the Pt/W-MCFs catalysts.