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首页> 外文期刊>AIChE Journal >Conversion of Isopropanol and Mixed Alcohols to Hydrocarbons Using HZSM-5 Catalyst in the MixAlco (TM) Process. Part 2: Studies at 5000 kPa (abs)
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Conversion of Isopropanol and Mixed Alcohols to Hydrocarbons Using HZSM-5 Catalyst in the MixAlco (TM) Process. Part 2: Studies at 5000 kPa (abs)

机译:在MixAlco(TM)工艺中使用HZSM-5催化剂将异丙醇和混合醇转化为烃。第2部分:5000 kPa(绝对)的研究

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This study employed HZSM-5 (SiO2/Al2O3 = 280 mol/ mol) to produce hydrocarbons from reagent-grade isopropanol and mixed alcohols made from lignocellulosic biomass (waste office paper and chicken manure) using the MixAlco (TM) process. All studies were performed at P=5000 kPa (abs). The experiments were conducted in two sets: (1) vary temperature (300-450 degrees C) at weight hourly space velocity (WHSV) 51.92 h 21, and (2) vary WHSV (1.92-11.52 h 21) at T=370 degrees C. For isopropanol at higher temperatures, the olefins undergo more cracking reactions to produce smaller molecules and more aromatics. At low temperatures, the molecules have less energy so they do not crack and therefore form larger molecules. At T=300 degrees C, the carbon distribution is bimodal at C9 and C12, which shows trimerization and tetramerization of propene. At 300 degrees C, propene was the only gas produced, cracking did not occur and therefore preserved high-molecular-weight molecules. For mixed alcohols, higher temperatures show significant catalyst deactivation; however, isopropanol did not show any catalyst deactivation. (C) 2016 American Institute of Chemical Engineers
机译:这项研究采用HZSM-5(SiO2 / Al2O3 = 280 mol / mol),通过试剂级异丙醇和使用MixAlco(TM)工艺由木质纤维素生物质(废纸和鸡粪)制成的混合醇生产烃。所有研究均在P = 5000 kPa(绝对)下进行。实验分为两组:(1)在重时空速(WHSV)51.92 h 21下改变温度(300-450摄氏度),和(2)在T = 370摄氏度下改变WHSV(1.92-11.52 h 21)对于较高温度下的异丙醇,烯烃进行更多的裂化反应以产生较小的分子和更多的芳族化合物。在低温下,分子的能量较少,因此它们不会裂开,因此会形成较大的分子。在T = 300℃下,碳分布在C9和C12处是双峰的,这表明丙烯的三聚和四聚。在300摄氏度时,丙烯是唯一产生的气体,没有发生裂解,因此保留了高分子量分子。对于混合醇,较高的温度显示出明显的催化剂失活。然而,异丙醇没有显示出任何催化剂失活。 (C)2016美国化学工程师学会

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