| 12-钨钼硅系杂多酸的热稳定性和酸催化性能的研究 |
| A STUDY ON THE THERMAL STABILITIES AND CATALYTIC PROPERTIES OF 12-TUNGSTOMOLYBDOSILICIC ACIDS |
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| 摘要: 引言近年来,杂多酸及其盐炎在催化领域内受到人们的普遍关注[1,2].对以P为杂原子的杂多酸的热稳定性和酸性已有大量研究报道[3,4].对以Si为杂原子的12-钼硅酸和12-钨硅酸虽也有过考察[5],但系统研究改变多原子组成对12-钨钼硅系杂多酸的热稳定性和酸性的影响则尚未见报道.本文考察了H4SiMo12-nWnO40(n=0,3,6,9,12)的热稳定性和酸催化性能. |
| 关键词: 12-钨钼硅系杂多酸 热稳定性 酸催化性能 |
| 基金项目: |
| Abstract: Hctcropolyacids H4SiMo12-nWnO40(n=0,3,6,9,12)have been prepared. The thermal stabilities of all samples have been determined by use of IR, XRD, LRS, XPSand DTA. With the probe of 2-propanol dehydration reaction, the samples' acid catalytic properties have been studied. It is shown that the thermal stabilities and catalytic activities of hctcropolyacids increase linearly with the number of atom W in the samples. With increasing the calcination temperatures, hctcropolyacids containing W atom decompose to form WO3, but no crystalline MoO3 observed within our experimental temperatures. |
| Keywords: 12-tungstomolybdoslllele acid thermal stability acid catalytic property |
| 投稿时间：1989-03-18 |
| 摘要点击次数: 1514 |
| 全文下载次数: 1511 |
| 侯文华,颜其洁.12-钨钼硅系杂多酸的热稳定性和酸催化性能的研究[J].无机化学学报,1991,7(3):366-369. |
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