天然气化工2011，Vol.36Issue(4)：38-41,4.
磷改性双功能催化剂合成二甲醚性能研究
Study on performances of P-modified bifunctional catalyst for dimethyl ether synthesis
摘要
Abstract
Abifunctional catalyst (C301/P-γ-Al2O3) for one-step synthesis of dimethyl ether from syngas was prepared by the method as follows: γ-Al2O3 was modified by impregnation with phosphoric acid aqueous solution and calcination to obtain the P-γ-Al2O3, which was then mixed with the commercial methanol synthesis catalyst C301 in a mass ratio of 1:4. The P-modified catalyst had higher activity than the unmodified catalyst. The modified catalyst was used in a slurry bed reactor and the conversion of CO increased from 93.11% to 95.90% while the DME selectivity increased from 34.61% to 42.27% under pressure of 3.7MPa, temperature of 250°C and feed gas HVCO molar ratio of 2. The P-γ-Al2O3 catalyst was characterized by FT-IR, XRD and BET, and it was found that the 0=P-0 bond existed in the P-γ-Al2O3, which made the numbers of both total acid and L acid sites of the P-γ-A12O3 surface increased that resulted in the improvement of the activity of the prepared bifunctional catalyst.关键词
磷改性/γ-Al2O3/双功能催化剂/二甲醚合成/磷酸Key words
phosphorus modification/γ-Al2O3/bifunctional catalyst/dimethyl ether synthesis/ phosphoric acid分类
化学化工引用本文复制引用
黄兵,张世玲,谢磊磊..磷改性双功能催化剂合成二甲醚性能研究[J].天然气化工,2011,36(4):38-41,4.基金项目
云南省科技计划项目省应用基金(2003E0027M) （2003E0027M）
