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Highly selective production of styrene by non-oxidative dehydrogenation of ethylbenzene over molybdenum-zirconium mixed oxide catalyst in fixed bed reactor: Activity, stability and kinetics
Catalysis Communications ( IF 3.7 ) Pub Date : 2021-03-22 , DOI: 10.1016/j.catcom.2021.106307
Sonam V. Sancheti , Ganapati D. Yadav

Non-oxidative dehydrogenation of ethylbenzene to styrene was carried out using 5% Mo/Zr mixed oxide as catalyst where the percentage is with reference to the metal content. The reaction was conducted in a down-flow fixed bed vapor phase reactor at atmospheric pressure. Maximum single-pass conversion of 19.53% was achieved with 97.5% selectivity at 853 K and WHSV of 1.72 h−1. The reported catalyst was found to have better selectivity of styrene than the catalysts reported before. The catalyst was very active, selective, and easy to reactivate insitu by passing air through the reactor. Regenerated catalyst also resulted in similar results as the fresh one. Reaction mechanism and kinetics were studied.



中文翻译:

固定床反应器中钼-锆混合氧化物催化剂上乙苯的非氧化脱氢高选择性生产苯乙烯:活性,稳定性和动力学

使用5%Mo / Zr混合氧化物作为催化剂进行乙苯至苯乙烯的非氧化脱氢,其百分数以金属含量为基准。该反应在大气压下在向下流动的固定床气相反应器中进行。在853 K和1.72 h -1的WHSV下,具有19.53%的最大单程转化率和97.5%的选择性。发现报道的催化剂比以前报道的催化剂具有更好的苯乙烯选择性。该催化剂是非常活泼,有选择性的,并且通过使空气通过反应器易于原位再活化。再生催化剂也产生了与新鲜催化剂相似的结果。研究了反应机理和动力学。

更新日期:2021-03-31
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