摘要
将Co/SiO_(2)-HAP催化剂应用于乙醇制备C_(4)烯烃,通过改变催化剂的装料方式、Co/SiO_(2)和HAP装料比、乙醇加入速率、Co与SiO_(2)的重量比及温度条件来提高C_(4)烯烃的收率。研究表明,不同的催化剂组合和温度对乙醇转化率,C_(4)烯烃选择性和C_(4)烯烃收率均有影响。随着温度的增加,乙醇转化率先增加后减小,C_(4)烯烃选择性先增加后减小。通过对实验数据建立多元曲线回归模型得到当反应温度大于350℃时,主要产物为C_(4)烯烃。通过研究C_(4)烯烃收率与乙醇转化率、C_(4)烯烃选择性的关系,以获得最优C_(4)烯烃收率为目标构造单目标最优化模型,并求得C_(4)烯烃收率最优温度为400℃,催化剂组合为:Co/SiO_(2)和HAP装料比1.36;Co负载量2.78;乙醇加入速率0.89 mL/min。
The Co/SiO_(2)-HAP catalyst was applied to ethanol to prepare C_(4) olefins.The yield of C_(4) olefins was improved by changing the loading mode of the catalyst,the loading ratio of Co/SiO_(2) and HAP,the addition rate of ethanol,the weight ratio of Co to SiO_(2) and temperature conditions.The results showed that different catalyst combinations and temperature had an effect on ethanol conversion,C_(4) olefins selectivity and C_(4) olefins yield.With the increase of temperature,ethanol conversion first increased and then decreased,while C_(4) olefins selectivity first increased and then decreased.The main product is C_(4) alkene when the reaction temperature is higher than 350℃.Through the relationship between C_(4) olefin yield,ethanol conversion and C_(4) olefin selectivity,a single-objective optimization model was constructed to obtain the optimal C_(4) olefin yield.The optimal temperature of C_(4) olefin yield was 400℃,and the catalyst combination was Co/SiO_(2) and HAP charging ratio of 1.36.Co load 2.78;Ethanol addition rate was 0.89 mL/min.
作者
李逸然
宫豪杰
李琦
王丽莎
Li Yiran;Gong Haojie;Li Qi;Wang Lisha(School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266000,China;School of Information and Control Engineering,University of Technology,Qingdao 266000,China)
出处
《山东化工》
CAS
2022年第10期85-88,共4页
Shandong Chemical Industry
