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SELECTIVE HYDROGENATION OF FURFURAL ON Ir/TiO_2 CATALYSTS

机译:Ir / TiO_2催化剂上糠醛的选择性加氢。

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摘要

Titania-supported Ir catalysts were used in the hydrogenation of furfural. Reactions were carried out in a stirred batch type reactor at 0.62MPa and 363K using 0.10M solution of furfural in a 1:1 mixture n-heptane –ethanol as solvent. Catalysts containing 2 wt% of Ir were reduced in H_2 flowat different temperatures in the range 473-773K. The catalysts were characterized by H_2 chemisorption, TEM, TPR, TPD of NH_3 and XPS. Conversion of furfural is higher at lower reduction temperatures, but leads to byproducts whereas reduction at higher temperatures shows selectivity to furfuryl alcohol close to 100%.
机译:二氧化钛负载的Ir催化剂用于糠醛的氢化。反应在0.62MPa和363K的搅拌间歇式反应器中进行,使用0.10M糠醛在1:1庚烷-乙醇混合物中的溶液作为溶剂。含有2 wt%Ir的催化剂在473-773K范围内的不同温度下在H_2流中还原。通过H_2化学吸附,TEM,TPR,NH_3的TPD和XPS对催化剂进行了表征。在较低的还原温度下糠醛的转化率较高,但会导致副产物,而在较高的温度下还原则表明糠醇的选择性接近100%。

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