Crystalline Mo-V-W-mixed Oxide with Orthorhombic and Trigonal Structures as Highly Efficient Oxidation Catalysts of Acrolein to Acrylic Acid
Crystalline Mo-V-W-mixed Oxide with Orthorhombic and Trigonal Structures as Highly Efficient Oxidation Catalysts of Acrolein to Acrylic Acid
复制标题
具有斜方和三方结构的结晶Mo-V-W混合氧化物作为丙烯醛高效氧化成丙烯酸的催化剂
DOI：
10.1007/s11244-014-0283-7
复制
发表时间：
2014
影响因子：
3.6
通讯作者：
Wataru Ueda
中科院分区：
文献类型：
--
作者：
Chuntian Qi;Chen Chen;Satoshi Ishikawa;Toru Murayama;Wataru Ueda
我们成功地将W引入到Mo_3VO_x中，并保持了正交、三角和非晶结构。合成的具有正交和三角晶结构的Mo（W）3VOx催化剂对丙烯醛气相选择氧化制丙烯酸的催化活性上级优于非晶态Mo（W）3VOx和四晶态Mo（W）3VOx。结果表明，具有正交和三角晶型结构的Mo（W）_3VOx是以Mo、W、V氧化物为基础的工业丙烯醛氧化催化剂的真实的活性相。此外，我们发现所得的含W催化剂显示出较少的依赖性的水分压在反应物进料上的丙烯醛转化率。
We succeeded in introducing W in Mo3VOxwith keeping the orthorhombic, trigonal, and amorphous structures. Synthesized crystalline Mo(W)3VOxwith orthorhombic and trigonal structures, both of which possess heptagonal channels, showed catalytic activity for gas-phase selective acrolein oxidation to acrylic acid superior to amorphous Mo(W)3VOxand to tetragonal Mo3VOx. The results strongly suggest that the crystalline Mo(W)3VOxwith orthorhombic and trigonal structures are real active phase of industrial acrolein oxidation catalysts based on Mo, W, and V oxides. Furthermore, we found that the resulting W-containing catalyst showed less-dependency of water partial pressure in the reactant feed on the acrolein conversion.