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Compound higher alcohol catalyst, preparation method and application

A technology for catalysts and higher alcohols, applied in catalyst activation/preparation, chemical instruments and methods, preparation of hydroxyl compounds, etc., can solve the problems of decreased catalytic activity and increased reaction energy consumption, and achieves low production cost, green process, and improved catalytic performance. The effect of efficiency

Active Publication Date: 2018-05-18
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Traditional alcohol-alcohol condensation catalysts usually contain soluble strong bases, such as sodium hydroxide, potassium hydroxide and cesium hydroxide, etc. These catalysts are easily soluble in the water generated in the reaction, resulting in a decrease in catalytic activity; Product and catalyst separation steps increase reaction energy consumption

Method used

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  • Compound higher alcohol catalyst, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A) Meso-Al 2 o 3 - Preparation of MgO

[0036] 1.89 g of CTAB was dissolved in 35 ml of deionized water to obtain a solution A with a CTAB concentration of 0.15 mol / L. 64.1gMg(NO 3 ) 2 .6H 2 O and 3.68g Al(NO 3 ) 3 .9H 2 O was dissolved in 52 ml deionized water to obtain Mg 2+ and Al 3+ The total concentration is 5.0mol / L solution B. Under the condition of stirring, solution B is added dropwise in solution A to obtain solution C, and the molar composition of C solution is:

[0037] (Mg 2+ +Al 3+ ):CTAB:H 2O=1:0.02:25. Mix 100ml ammonia water and 300ml deionized water to get NH 4 + D solution with a concentration of 3.45mol / L. Control the temperature of solution C at 50°C, add solution D dropwise to solution C under stirring conditions, control the pH value of the system to 9.5, stir for 2 hours under this condition, and dynamically crystallize the resulting slurry under hydrothermal conditions at 100°C After 16 hours of crystallization, the obtained so...

Embodiment 2

[0043] A) Meso-ZrO 2 - Preparation of MgO

[0044] 4.67 g of CTAB was dissolved in 44 ml of deionized water to obtain solution A with a CTAB concentration of 0.29 mol / L. 64.10g Mg(NO 3 ) 2 .6H 2 O and 2.79g Zr(NO 3 ) 4 .5H 2 O was dissolved in 66 ml deionized water to obtain Mg 2+ and Zr 4+ Solution B with a total concentration of 3.9 mol / . Under the condition of stirring, solution B is added dropwise in solution A to obtain solution C, and the molar composition of C solution is:

[0045] (Mg 2+ +Zr 4+ ):CTAB:H 2 O=1:0.05:30. . Mix 100ml ammonia water and 300ml deionized water to get NH 4 + Solution D with a concentration of 3.45 mol / L. Control the temperature of solution C at 40°C, add solution D dropwise to solution C under stirring conditions, control the pH value of the system to 10.0, stir for 2 hours under this condition, and dynamically crystallize the resulting slurry under hydrothermal conditions at 130°C 12h, after the crystallization was completed,...

Embodiment 3

[0052] A) Meso-MgO-CeO 2 preparation of

[0053] 9.11 g of CTAB was dissolved in 133 ml of deionized water to obtain a solution A with a CTAB concentration of 0.19 mol / L. 64.10gMg(NO 3 ) 2 .6H 2 O and 2.52g Ce(NO 3 ) 3 ·6H 2 O was dissolved in 200ml deionized water to obtain Mg 2+ and Ce 3+ Solution B with a total concentration of 1.3 mol / . Under the condition of stirring, solution B is added dropwise in solution A to obtain solution C, and the molar composition of C solution is:

[0054] (Mg 2+ +Ce 3+ ):CTAB:H 2 O=1:0.1:80. Mix 100ml ammonia water and 590ml deionized water to get NH 4+ Solution D with a concentration of 2.00 mol / L. Control the temperature of solution C to 70°C, add solution D dropwise to solution C under stirring conditions, control the pH value of the system to 9.0, stir under this condition for 1 hour, and dynamically crystallize the resulting slurry under hydrothermal conditions at 140°C After 10 hours of crystallization, the obtained solid...

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Abstract

The invention discloses a compound higher alcohol catalyst which is prepared from magnesium oxide, copper oxide and an aid M. The catalyst is prepared according to oxide mass of MgO to CuO to M beingequal to 100 to (1 to 8) to (5 to 25), and the M is one of aluminum oxide, zirconium oxide, titanium oxide, cerium oxide and silicone dioxide. The catalyst disclosed by the invention has the advantages of high conversion rate and good stability.

Description

technical field [0001] The invention relates to a catalyst for synthesizing higher alcohols, a preparation method and application. technical background [0002] High-carbon alcohols mainly refer to alcohols with a carbon number ≥ 4, which have a wide range of uses. Higher alcohols are active in chemical properties, and can be derived into various aldehydes, ketones, carboxylic acids, halogenated compounds, esters, etc. through reactions. They can be used in medicine, biology, chemical, food and other industries. They are in great demand and have significant economic value. The traditional higher alcohol preparation process uses olefins as raw materials to obtain the final product through formylation, condensation, and hydrogenation reactions. This process is complex, including multi-step reactions, and the reaction efficiency is low. The reaction conditions are relatively harsh, and noble metals are required. Catalyst, resulting in high reaction cost. Moreover, olefins com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72B01J23/83B01J35/10B01J37/02B01J37/08B01J37/10C07C29/34C07C31/125
CPCC07C29/34B01J23/002B01J23/78B01J23/83B01J37/0201B01J37/08B01J37/10B01J2523/00B01J35/613B01J35/615B01J35/647B01J2523/17B01J2523/22B01J2523/31B01J2523/3712B01J2523/48B01J2523/41C07C31/125
Inventor 李德宝郭荷芹贾丽涛侯博肖勇
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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