The transhydrogenation of propyne and butane was studied over a 1 % VO x /alumina catalyst at 873 K. In the absence of the vanadia, the alumina support was active for cracking and alkylation. However, the addition of the vanadia reduced the propensity for both cracking and alkylation and added dehydrogenation activity. When propyne and butane were co-fed over the catalyst there was a synergistic effect resulting in an increased conversion of propyne (81 cf. 26 % when fed alone); however, much of this increased conversion was converted to carbon deposited on the catalyst. Transhydrogenation of propyne to propene was detected with an enhanced yield of propene when the propane/butane mix was passed over the catalyst. Taking a yield based on propyne fed then the yield of propene increased from 1.2 to 5.0 %. The conversion of butane to value-added products was also enhanced with all the butane converted accounted for in the production of 1-butene, trans-2-butene, iso-butane and iso-butene.
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机译：在873 K下，在1％VO x /氧化铝催化剂上研究了丙炔和丁烷的转氢反应。在不存在钒的情况下，氧化铝载体对裂解和烷基化具有活性。但是，钒的加入降低了裂解和烷基化的倾向，并增加了脱氢活性。当丙炔和丁烷共同进料到催化剂上时，会产生协同作用，从而提高丙炔的转化率（单独进料时81 cf. 26％）；然而，这种增加的转化率大部分转化为沉积在催化剂上的碳。当丙烷/丁烷混合物通过催化剂时，以提高的丙烯收率检测到丙炔向加氢的氢化。以基于丙炔进料的产率计，丙烯的产率从1.2％增加至5.0％。丁烷向增值产品的转化率也得到了提高，在1-丁烯，反式-2-丁烯，异丁烷和异丁烯的生产中，所有转化的丁烷都占了比重。
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