FROM BIOALCOHOLS (ETHANOL AND N-BUTANOL) TO OXIGENATED DIESEL ADDITIVES: 1,1 DIETHOXY BUTANE
In this paper the production of 1,1 diethoxy butane from ethanol and n-butanal will be considered. Two parallel research ways were followed to achieve the main goal of the research. In the first step n-butanal was obtained from n-butanol and in the second step 1,1 diethoxy butane (the acetal) was obtained from n-butanal and ethanol. In the production of nbutanal, the catalytic activity and selectivity of copper and copper-ruthenium catalysts supported on ZrO2 were studied in two reaction pathways: n-butanol dehydrogenation and partial oxidation of n-butanol. Ruthenium catalysts showed higher activity and stability than copper catalysts in the partial oxidation of n-butanol, while copper catalysts presented higher activity and stability for n-butanol deshydrogenation. Nevertheless, the copper system showed a higher selectivity toward n-butanal production in the two reaction pathways. For the 1,1diethoxy-butane a non-conventional reaction process was used: catalytic reactive distillation. In this system, the reaction products are continuously removed from the reaction zone in order to obtain higher conversions than the predicted ones by thermodynamics. In this part, the experimental work was carried out in a semi-pilot reactive distillation plant and a Katapak SP11 with Amberlyst 47 commercial catalyst was used as structured packing. The results showed that at high reflux ratios thermodynamic limitations were overcome, achieving higher conversions than the equilibrium ones.
acetals aldehydes oxidation dehydrogenation Amberlyst reactive distillation
I. AGIRRE A. IRIONDO J. REQUIES V.L. BARRIO B. G(U)EMEZ J.F. CAMBRA A. LOPEZ P.L. ARIAS
Escuela Técnica Superior de Ingeniería de Bilbao. Alameda Urquijo s/n 48013 Bilbao,Spain
国际会议
北京
英文
311-316
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）