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asi19木虫 (正式写手)
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帮忙翻译二甲醚合成方面摘要,谢谢
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大家好!下面是有关二甲醚合成方面的摘要,一共三部分,先传第一段落。本人不懂英语,请不要用翻译软件之类翻译!希望英语好的同学帮忙翻译一下,谢谢! 合成气一步法制二甲醚的研究 二甲醚不仅可作为理想的清洁替代能源,还是重要的化工原料。合成气直接生产二甲醚打破了甲醇合成反应的热力学限制,提高了合成气的单程转化率,并且在工艺路线中具有明显优势。合成气直接制二甲醚的催化剂称之为双功能催化剂,即同时具有甲醇合成功能和甲醇脱水功能。如果甲醇合成组分和甲醇脱水组分相互匹配产生“协同效应”,那么催化剂就具有良好的活性和选择性。所以,研发出性能良好的双功能催化剂具有重要的学术价值和应用价值。 |
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chengcj.2008
至尊木虫 (知名作家)
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asi19(金币+40,VIP+0):chengcj.2008,真心对您说声:谢谢;祝2009好人,好运,好梦
asi19(金币+40,VIP+0):chengcj.2008,真心对您说声:谢谢;祝2009好人,好运,好梦
不好意思, 首先更正一下: 双催化剂应译为 bifunctional catalyst. ![]() 第三部分: The results indicate that the catalyst avtivity is the highest when the molar ratio of copper, zinc and aluminum is a:b:c, and the weight ratio a:b of the components of methanol synthesis and methanol dehydration corresponds to the best catalyst activity and selectivity of dimethyl ether. Various preparative methods were listed as follows according to the catalyst activity and selectivity: colloid impregnation method > colloid deposition method > co-percipitation deposition method > mechanical mixed method. Auxiliary agent A, B and C were added in the mechanical mixed method, respectively. The function of auxiliary agent was given in a decreasing order: A>B>C. The same order of the auxiliary agents was obtained in colloid impregnation method, i.e. A>B>C. After different contents of auxiliary agent A were used in the mechanical mixed method, co-percipitation deposition method, colloid deposition method and colloid impregnation method, the optimal content of A is a% according to the catalyst activity and selectivity. The reaction equilibrium time for dimethyl synthesis was a h, and the optimal synthetic conditions of dimethyl ether bifunctional catalyst were: t=a℃,P=bMPa,n(H2)/n(CO)=c,space velocity d h-1。 |
10楼2009-01-01 17:10:37
dotty
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2楼2008-12-31 15:03:17
dotty
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刚才用了一下,你看看 哈哈 Not only can be used as an ideal dimethyl ether, or the clean alternative energy of chemical raw materials. Syngas direct production dimethyl ether broke the methanol synthesis of thermodynamics, improving the limit of one-way conversion, and the synthesis process route has obvious advantages. Direct synthesis of dimethyl ether as catalyst, double function catalyst with methanol synthesis function and methanol dehydration function. If the methanol synthesis components and methanol dehydration matching component "synergy, catalyst is good activity and selectivity. Therefore, the development of the double function catalyst has important academic value and practical value. |

3楼2008-12-31 15:03:53
asi19
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4楼2008-12-31 15:15:53













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