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偏硅酸钠负载五氧化二钒合成、表征和催化性能 被引量:2

The Synthesis,Characterization and Catalytic Properties of V_2O_5/Na_2SiO_3
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摘要 利用浸渍法制备负载型V2O5/Na2SiO3催化剂,并通过XRD、IR、TG-DSC手段对催化剂进行了结构和热分析表征。在以Na2SiO3为载体的基础上,以V2O5为催化剂,通过改变V2O5的负载量,考查了不同负载量的V2O5催化剂对苯氧化为苯酚的催化性能的影响。实验结果表明,当V2O5的负载量为1%时,V2O5的催化性能最好,这是由于V2O5高度分散于Na2SiO3载体上,增大了活性组分V2O5的表面积,从而增加了其活性中心个数及活性组分与反应物的接触面积,增加了其催化活性。 V2O5/Na2SiO3 catalyst was synthesized by impregnation and characterized by the IR,XRD,TG-DSC.On the base of the Na2SiO3 as the carrier and V2O5 as catalyst,the effect of different load of V2O5 catalyst on the catalytic oxidation to phenol was determined.Experimental results show that when V2O5 load is 1%,the catalytic properties of V2O5 are the best.This is due to V2O5 is highly dispersed to Na2SiO3 carriers,which increases the surface area of active component V2O5.
出处 《盐湖研究》 CSCD 2010年第4期26-30,共5页 Journal of Salt Lake Research
基金 河南省教育厅自然科学研究计划项目(2010A150001) 河南省重点学科基金项目 安阳市科技局项目(63) 安阳市科技发展计划项目(218) 安阳师范学院青年骨干教师项目(J10625)
关键词 五氧化二钒 偏硅酸钠 苯酚 催化反应 Vanadium pentoxide Sodium metasilicate Benzene Phenol Catalysis
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