1) heteropolyacid/acid catalysis
杂多酸/酸催化作用
2) catalyzed by heteropoly acids
杂多酸催化
1.
Synthesis of butyl acetate catalyzed by heteropoly acids under microwave irradiation;
微波辐射杂多酸催化合成乙酸丁酯的研究
3) heteropolyacid catalyst
杂多酸催化剂
1.
The results obtained show that heteropolyacid catalysts having higher catalytic activities,narrow product distribution,and being environmentally friendly,can take the place of BF 3 catalyst.
结果发现：杂多酸催化剂具有较高的催化反应活性和较窄的相对分子量分布，其活性顺序为：ＰＷ１２＞ＳｉＷ１２－ＰＭｏ１２＞ＳｉＭｏ１２，用其替代ＢＦ３催化剂，具有环境友好特点。
4) heteropoly acid catalyst
杂多酸催化剂
1.
The results showed that the esterification activities of heteropoly acid catalysts were greatly affected by various carriers since the activity was related to the interaction of heteropoly acid and the carrier.
结果表明:载体种类对负载杂多酸催化剂的催化活性有很大影响,催化活性由大到小顺序为:硅胶>Hβ分子筛>中性氧化铝。
2.
This article mainly summarized the method of synthesize supported heteropoly acid catalyst,and in restigated the catalyze activation of the catalyst simultaneity,we also pro.
对采用水热分散法、溶胶-凝胶法、浸渍法和原位合成法,利用分子筛的有序孔结构、高比表面积和热稳定性等特点,在大孔径分子筛表面或其晶体结构中将较大体积的杂多酸引入,制备负载型杂多酸催化剂的技术进行了综述,同时考查了其催化活性,并对其未来的研究进展和应用前景进行了展望。
3.
Catalytic synthesis of ethylene glycol mono-dicyclopenyl ether by heteropoly acid catalyst TiSiW_(12)O_(40)/TiO_2;
结果表明:与标准中间体双环戊二烯羟乙基醚有相同的基团;固载杂多酸催化剂对酯化合成有很好的催化效果且具有无污染、可重复使用等优点。
6) heteropolyacid-acetic acid mixed catalyst
杂多酸-乙酸混合催化剂
补充资料：杂多酸(heteropolyacid)
【杂多酸】(heteropolyacid)含有不同酸酐的多酸。呈茏状，笼是以十二个钼或钨通过氧桥堆砌而成，笼中心是另一种酸酐的非金属原子（如磷、砷、硅等）；该非金属元素又通过氧桥与四周的钼或钨相连接。酸化含有其他的含氧酸根离子（例如`PO_3^(3-)`、`SiO_4^(4-)`）或金属离子的钼酸盐、钨酸盐溶液，可制得相应的钼杂多酸、钨杂多酸及其盐类。例如12-钨磷酸`H_3[P(W_12O_40]\cdotxH_2O`、12-钨硅酸`H_4
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条