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Effect of the Composition of Ethanol–Water Mixtures on the Properties of Oxide (Zn-Zr-Si) and Zeolitic (Ta/SiBEA) Catalysts in the Production of 1,3-Butadiene
Theoretical and Experimental Chemistry ( IF 0.7 ) Pub Date : 2019-09-01 , DOI: 10.1007/s11237-019-09618-1
P. I. Kyriienko , O. V. Larina , S. Dzwigaj , S. O. Soloviev , S. M. Orlyk

The reasons for the deactivating effect of water on the conversion of ethanol to 1,3-butadiene in the presence of Zn-Zr(La)-Si oxide and Cu(Ag, Zn)/Ta/SiBEA zeolite catalysts are studied. The decrease in the yield of 1,3-butadiene using ethanol–water mixtures of different composition compared with rectified ethanol is due to the deactivating effect of H2O vapor on the Lewis acid sites of the catalyst, at which acetaldehyde undergoes aldol condensation.

中文翻译:

乙醇-水混合物的组成对氧化物 (Zn-Zr-Si) 和沸石 (Ta/SiBEA) 催化剂在 1,3-丁二烯生产中的性能的影响

研究了在Zn-Zr(La)-Si氧化物和Cu(Ag, Zn)/Ta/SiBEA沸石催化剂存在下,水对乙醇转化为1,3-丁二烯的失活作用的原因。与精馏乙醇相比,使用不同组成的乙醇-水混合物的 1,3-丁二烯产率降低是由于 H2O 蒸气对催化剂的路易斯酸位点的钝化作用,在该位点乙醛发生羟醛缩合。
更新日期:2019-09-01
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