本文關(guān)鍵詞： 合成氣 二甲醚 雙功能催化劑 擠條成型　出處：《天然氣化工(C1化學(xué)與化工)》2016年06期 　論文類型：期刊論文

【摘要】：選擇Cu/Zn/Al_2O_3和擬薄水鋁石,同時(shí)添加助劑,采用擠條法成型合成氣一步法制備二甲醚的雙功能催化劑,通過(guò)對(duì)催化劑進(jìn)行強(qiáng)度測(cè)試、表征和性能評(píng)價(jià),確定了最佳的催化劑制備條件為:Cu/Zn/Al_2O_3與擬薄水鋁質(zhì)量比1∶1,膠溶劑硝酸質(zhì)量分?jǐn)?shù)為4%,助擠劑質(zhì)量分?jǐn)?shù)檸檬酸為5%、田菁粉為2.5%,用水量與原料粉體的質(zhì)量比為0.60。在此條件下制備的催化劑,其強(qiáng)度可達(dá)153N/cm,在250℃、3MPa、2500m L/(g·h)的條件下,催化劑CO轉(zhuǎn)化率為79.8%,二甲醚的選擇性為49.1%,甲醇的選擇性為15.2%。
[Abstract]:Cu/Zn/Al_2O_3 and pseudo-boehmite were selected to prepare dimethyl ether (DME) bifunctional catalyst by one-step extrusion of syngas by adding auxiliary agent. The strength of the catalyst was tested, characterized and its performance evaluated. The optimum conditions for the preparation of the catalyst are as follows: 1: 1 mass ratio of W / Cu / Zn / Al _ 2O _ 3 to Al _ 2O _ 3 / Al _ 2O _ 3, mass fraction of nitric acid in colloid solvent is 4%, mass fraction of squeezing agent is 5%, mass fraction of Sesbania powder is 2.5%, mass ratio of water consumption to raw material powder is 0.60. Catalyst prepared under the. The strength of the catalyst can reach 153N / cm. At 250 鈩，

本文編號(hào)：1536237