2. Experimental2.1. Catalyst prepar

2. Experimental
2.1. Catalyst preparation
The tungsten-substituted mesoporous SBA-15 materials
(MWS) were prepared using Pluronic P123 triblock polymer
(EO20PO70EO20, Mav = 5800, Aldrich) as template
under acidic conditions. Briefly, a solution of 24 g of
EO20PO70EO20 was added to 840 ml of 2 M HCl to yield
a transparent solution. After stirring for several hours at
313 K, 51.2 g of tetraethylorthosilicate (TEOS) was quickly
added into the solution, stirred for half an hour, then the
pre-designated amounts of aqueous sodium tungstate solution
(NaWO4 Æ 2H2O) were added dropwise under vigorous
stirring, and the sample was further hydrothermally treated
at 368 K for 3 days. The solid products were recovered by
filtration and calcined at 823 K for 5 h to obtain a pale-yellow
powder of MWS. The molar ratio of Si/W in the prepared
gel is in accord with that in the starting solution,
because the tetraethylorthosilicate and sodium tungstate
are deposited completely by hydrolysis.

結果 (中文) 1:

2.实验2.1.催化剂的制备钨-取代介孔 sba-15 材料(MWS) 制备了尼克 P123 嵌段聚合物(EO20PO70EO20、 微型飞行器 = 5800，奥尔德里奇) 作为模板酸性条件下。简单地说，一个解决方案 24 克EO20PO70EO20 被添加到 840 毫升的 2 M HCl 屈服一个透明的解决方案。后几个小时在搅拌313 K，51.2 g 用正硅酸乙酯 (TEOS) 很快被添加到解决方案中，激起了半个小时，然后预先指定的数量的钠水溶液钨酸盐溶液(NaWO4 Æ 2H2O) 滴下大力增加搅拌和样品是祖母绿宝石进一步治疗在 3 天的 368 K。固体产品已恢复过来过滤和煅烧在 823 K 5 个小时获得淡黄色MWS 粉末。在准备的摩尔比对 Si/W凝胶中处于协议与解出发，因为用正硅酸乙酯和钨酸钠被沉淀完全水解。

結果 (中文) 3:

2。实验2.1。催化剂的制备
钨取代的SBA-15介孔材料
（MWS）使用三嵌段聚合物的制备
P123（EO20PO70EO20，MAV = 5800，奥德里奇）为模板剂，在酸性条件下
。简而言之，一个24克的
EO20PO70EO20溶液加入840毫升的2 M盐酸产量
透明溶液。搅拌后数小时为313克，51。以正硅酸乙酯（TEOS）2克，很快
加入溶液中，搅拌半小时，然后
预先指定的水钨酸钠溶液
量（nawo4Æ2H2O）进行激烈搅拌下滴加
，和样品进一步热处理
在368 K 3天。固体产品回收利用过滤、焙烧温度为823 K 5小时来获得一个淡黄色粉末
MWS。在制备
凝胶Si / W的摩尔比在起始溶液的协议，
因为正硅酸乙酯和钨酸钠
水解完全沉淀。