Preparation method of integrated catalyst for efficiently preparing acetic acid from synthesis gas

The invention discloses a preparation method of an integrated catalyst for efficiently preparing acetic acid from synthesis gas, which is characterized by comprising the following steps: S1, preparing a composite metal oxide; s2, preparing boehmite sol; s3, preparing a methanol core-shell catalyst b...

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Hauptverfasser: PENG XINYI, LI KONGZHAI, HE LUN, WANG YUHAO, GUO LONGYI, LI ZHONGLIN, LI XIAOFENG, WANG CHUNLIANG, FU JUNRU
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses a preparation method of an integrated catalyst for efficiently preparing acetic acid from synthesis gas, which is characterized by comprising the following steps: S1, preparing a composite metal oxide; s2, preparing boehmite sol; s3, preparing a methanol core-shell catalyst by combining boehmite sol; S4, selecting and preparing a carbonylation catalyst; and S5, mixing the obtained methanol core-shell catalyst and carbonylation catalyst again through boehmite sol to obtain the integrated catalyst for efficiently preparing acetic acid from synthetic gas. The preparation method is simple, the double-shell core-shell catalyst is designed, the traffic control function of the molecular sieve is utilized, relay catalysis of one-way diffusion of synthesis gas is achieved, and the integrated catalyst for directly producing acetic acid is prepared. 本发明公开了一种高效合成气制乙酸一体化催化剂的制备方法,其特征在于,包括以下步骤:S1、制备复合金属氧化物;S2、制备勃姆石溶胶;S3、结合勃姆石溶胶制备甲醇核壳催化剂:S4、选取并制备羰基化催化剂;S5、将得到的甲醇核壳催化剂和羰基化催化剂通过勃姆石溶胶再次混合,即得到所述高效合成气制乙酸一体化