SiO2, g-Al2O3, ZnO, SnO2 and WO3-Zr

SiO2, g-Al2O3, ZnO, SnO2 and WO3-ZrO2 supported
palladium catalysts were prepared by incipient-wetness or
wet impregnation methods. Commercial SiO2 (hydrophobic
silica HDK-20, BET 170 m2 g
1, from Wacker) and
g-Al2O3 (T-126, BET 180 m2 g
1 from Girdler) were used.
The other oxides used as supports were synthesized in our
laboratory as follows: for the preparation of ZnO aqueous
solutions of Zn(NO3)26H2Oand (NH4)2CO3 weremixed at
room temperature. After filtering and washing, solid was
dried at 373 K and then it was treated under Ar at 573 K.
SnO2 was prepared by treating under vigorous stirring an
ethanolic solution of anhydrous SnCl4 with an aqueous
solution of NH3, then solvent was evaporated at 303 K and
the solid was washed until the removing of chloride ions
was achieved. Finally, it was dried and calcined under air at
373 and 573 K, respectively. WO3-ZrO2 was prepared by a
sol–gel method, an ammonia solution of H2WO4 diluted
with n-propanol was mixed with a solution containing the
Zr(IV) precursor (Zr(IV) n-propoxide). The suspension was
aged at 343 K for 6 h, then the solid was filtered and
subsequently dried at 373 K for 16 h and calcined at 873 K
for 4 h.
Pd(CH3COO

結果 (中文) 1:

SiO2、 g-Al2O3，ZnO、 SnO2 和 WO3 ZrO2 支持钯催化剂制得初始湿度或湿的浸渍方法。商业 SiO2 （疏水性二氧化硅 HDK-20，打赌 170 m2 g 1，从瓦克） 和采用 g-Al2O3 （T-126，打赌 180 m2 g 1 从格德勒）。其他氧化物用作支持设计合成了我们实验室，如下所示： 水溶液氧化锌的制备解的锌 (NO3) 2 6H2Oand （NH4） 2CO3 weremixed 在房间温度。过滤和洗涤，固体后在 373 K 干然后它是治疗下 Ar 573 k。SnO2 制得在剧烈搅拌下治疗醇解的无水 SnCl4 用水NH3，然后溶剂的溶液蒸发后在 303 K 和固体被冲走直到消除氯离子实现了。最后，再烘干、 煅烧下空气373 和 573k，分别。WO3 ZrO2 制得溶胶-凝胶法 H2WO4 氨溶液稀释用 n-异丙醇与一个解决方案包含的混合Ⅳ 前体 （ⅳ n-丙醇）。暂停了岁 343 K 6 小时，然后固体被过滤和随后在 373 K 16 小时干燥、 煅烧在 873 K4 小时。Pd (CH3COO

結果 (中文) 3:

二氧化硅，氧化铝，氧化锌，氧化锡、WO3-ZrO2支持
钯催化剂采用等体积浸渍方法制备或
。商业SiO2（疏水
二氧化硅hdk-20，打赌的170平方米
1，从
瓦克）和氧化铝（t-126，打赌的180平方米
1环绕）进行合成。
作为我们
实验室作为支持其他氧化物：氧化锌制备水
Zn（NO3）解决方案2  6h2oand（NH4）2CO3混合，在室温
。过滤、洗涤后，固相
干在373 K，然后是治疗AR在573 K下
SnO2制备治疗在剧烈搅拌的
乙醇溶液无水SnCl4溶液与水
NH3，然后蒸发溶剂在303 K和
固体洗涤至氯离子
去除实现了。最后，进行干燥和煅烧在空气
373 K和573 K，分别。WO3-ZrO2被
溶胶凝胶方法制备–，与正丙醇的钨酸氨溶液稀释
含有混合的
Zr（IV）前驱体溶液（Zr（IV）体系）。悬架是
在343 K 6小时老化，然后过滤固体和
随后在373 K干燥16小时，在873 K焙烧4 h

PD（CH3COO