《Table 4Steady-state conversion and product selectivity in the methanol amination reaction on DNL-6
本系列图表出处文件名:随高清版一同展现
《"以N,N’-二甲基乙二胺为模板剂合成磷酸硅铝分子筛DNL-6及其在催化中的应用(英文)"》
a WHSV=0.8131 h-1,NH3/CH3OH=2.0,TOS=146 min.b MMA,DMA,and TMA refer to monomethylamine,dimethylamine,and trimethylamine,respectively.Dimethyl ether is considered as a methanol resource.c(MMA+DMA)selectivity in the three methylamine products.d Sour
The catalytic performance of DNL-6 samples was evaluated in the methanol amination reaction at reaction temperatures of260 and 300°C,methanol WHSV of 0.813 h-1,and n(ammonia):n(methanol)=2:1.The steady-state catalytic results are illustrated in Table 4.The main products are MMA and DMA with all DNL-6 catalysts.Increasing the reaction temperature from 260 to 300°C could greatly improve the catalytic activity.However,the selectivity for MMA decreased obviously accompanied by an increase in DMA and TMA,due to an enhanced methylation reaction at elevated temperatures.H-DNL-6,with its ultrahigh silica content,induces the highest methanol conversion and selectivity for MMA plus DMA.Fig.8illustrates the changes in methanol conversion and product selectivity with time on stream for H-DNL-6 at 300°C.It is clear that the reaction is stable during the investigated period;further,methanol conversion is higher than 88%and selectivity for MMA plus DMA is greater than 85%.
图表编号 | XD008196500 严禁用于非法目的 |
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绘制时间 | 2018.09.01 |
作者 | 吴鹏飞、杨淼、张雯娜、曾姝、高铭滨、徐舒涛、田鹏、刘中民 |
绘制单位 | 中国科学院大连化学物理研究所甲醇制烯烃国家工程实验室、中国科学院大学、中国科学院大连化学物理研究所甲醇制烯烃国家工程实验室、中国科学院大连化学物理研究所甲醇制烯烃国家工程实验室、中国科学院大学、中国科学院大连化学物理研究所甲醇制烯烃国家工程实验室、中国科学院大学、中国科学院大连化学物理研究所甲醇制烯烃国家工程实验室、中国科学院大学、中国科学院大连化学物理研究所甲醇制烯烃国家工程实验室、中国科学院大连化学物理研究所甲醇制烯烃国家工程实验室、中国科学院大连化学物理研究所甲醇制烯烃国家工程实验室 |
更多格式 | 高清、无水印(增值服务) |
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