Influence of resin structure on the addition of ethanol to isobutene in the vapour phase

British Polymer Journal Pub Date : 1990-01-01 DOI:10.1002/PI.4980230120

M. Iborra, J. Tejero, J. Izquierdo, F. Cunill

引用次数: 11

Abstract

The addition of ethanol to isobutene in the vapour phase has been studied on four commercial macroporous resins. The acid group content of the resins used was about 5 meq g−1, and their degrees of crosslinking were 12, 16, 18 and 20%. Differential conversions were measured for ethanol-isobutene-nitrogen feeds at 53–78.5°C and atmospheric pressure, far from limitation by chemical equilibrium. The rate data showed that isobutene has an enhancing effect on the reaction, whereas ethanol has a strong inhibitory effect in the range studied. The four catalysts showed similar behaviour. At the lower temperatures explored all the resins have similar catalytic activity, but at the highest temperature the resin with 18% divinylbenzene showed the highest activity. This maximum activity can be explained by a greater accessibility to the acid groups, which is in agreement with the literature.

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树脂结构对乙醇气相加成异丁烯的影响

研究了四种商用大孔树脂气相中乙醇对异丁烯的加成反应。所用树脂的酸基含量约为5 meq g−1，交联度分别为12%、16%、18%和20%。在53-78.5°C和大气压下测量了乙醇-异丁烯-氮进料的差异转化，远远超出了化学平衡的限制。实验结果表明，异丁烯对反应有促进作用，而乙醇对反应有较强的抑制作用。这四种催化剂表现出相似的行为。在较低温度下，所有树脂都具有相似的催化活性，但在最高温度下，含18%二乙烯基苯的树脂表现出最高的催化活性。这种最大活性可以解释为更容易接近酸基团，这与文献一致。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

British Polymer Journal

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