制备了一系列添加稀有金属氧化物MxOy(M=Zr,Nb,Pr,Sm,Tb,Yb)的钼-铋催化剂.研究了反应温度、异丁烯在原料气中的浓度、稀有金属在催化剂中的比例、稀有金属的种类对催化剂活性的影响,找出了最佳反应条件.用XRD等方法对催化剂进行了表征.实验证明,添加稀有金属氧化物显著提高了催化剂的活性及甲基丙烯醛的选择性.在含有稀有金属氧化物的钼-铋催化剂中,物种之间存在着强烈的协同作用,这可能是催化活性大大提高的主要原因.
参考文献
| [1] | 韩占刚;李铭岫 .异丁烯制甲基丙烯酸甲酯催化剂研究进展[J].现代化工,2001,21(04):21. |
| [2] | Weng L T;Spitaels N;Yaase B et al.Phase cooperation between tin and antimony oxides in selective oxidation of isobutene to methacrolein[J].Journal of Catalysis,1991,132:319;343;360. |
| [3] | Douglas Carson;Gisele Coudurier;Michel Forissier .Synergy effects in the catalytic properties of bismuth molybdates[J].Journal of the Chemical Society,Faraday Transactions 1,1983,79:1921. |
| [4] | CARRAZAN S R G;Martin C;Rives V .Selective oxidation of isobutene to methacrolein on multiphasic molybdate based catalysts[J].Applied Catalysis A:General,1996,135:95. |
| [5] | Haichao liu;Eric M Gaigneaux;Hideo Imoto et al.Performance and characterization of novel Re-Sb-O catalysis active for the selective oxidation of isobutylene to methacrolein[J].Journal of Physical Chemistry B,2000,104:2033. |
| [6] | Moens L;Ruiz P;Delmon B et al.Cooperation effects towards partial oxidation of isobutene on multiphasic catalysts based on bismuth pyrostannate[J].Applied Catalysis A:General,1998,171:131. |
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