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Aluminium base slurried catalyst and preparation thereof

A catalyst and paste-like technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of large AIP investment, low relative Al content, increased organic Solvent amount and other issues, to achieve the effect of reducing raw material cost, low price, and water content

Inactive Publication Date: 2008-09-17
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But this method is aluminum source with aluminum isopropoxide (AIP), and production cost is higher
In addition, the relative content of Al in AIP is low, and the amount of AIP input in the catalyst preparation process is large. In order to meet the hydrolysis and polycondensation of AIP, a large amount of water needs to be added, which not only greatly increases the volume of the device, but also greatly increases the subsequent surface area. Amount of organic solvent in processing

Method used

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  • Aluminium base slurried catalyst and preparation thereof

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Embodiment Construction

[0018] Specific embodiments 1. Put 9.88g of pseudo-boehmite and 197.6ml of deionized water into a colloid mill to grind and disperse to form an AlOOH slurry, stir and heat at 338K for 0.5h, then add nitric acid to adjust the pH value of the slurry to 0.5, Continue to stir for 0.5 h to obtain AlOOH sol; add 9.95 g of copper nitrate and 12.24 g of zinc nitrate aqueous solutions together to the above AlOOH sol, heat and stir until a gel is formed. After aging, the gel was replaced with acetone, then emulsified and dispersed in liquid paraffin, and finally in N 2 Heat treatment at 573K for 5h under atmosphere and strong stirring to obtain slurry catalyst.

[0019] Embodiment 2. Put 9.88g of boehmite and 39.52ml of deionized water into a colloid mill to grind and disperse to form an AlOOH slurry, stir and heat at 353K for 1.0h, then add phosphoric acid to adjust the pH value of the slurry to 5.0, continue Stir for 1.5 h to obtain AlOOH sol; add 1.99 g of copper nitrate in ethanol ...

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Abstract

The invention relates to an aluminum base slurry catalyst and a preparation method thereof, belonging to the technical field of catalyst preparation, in particular to a slurry catalyst which adopts AlOOH as aluminum source and directly synthesizes the methanol and dimethyl ether for slurry bed from solution to serosity and the preparation method thereof; in the catalyst, Al exists in the form of AlOOH. The aluminum base slurry catalyst has the advantages of reducing material cost from source, greatly reducing water content in catalyst precursor, greatly decreasing the size of the production equipment, improving efficiency of the equipment and facilitating the industrial production.

Description

Technical field: [0001] The invention discloses an aluminum-based slurry catalyst and a preparation method thereof, which belong to the technical field of catalyst preparation, specifically, a catalyst which uses AlOOH as an aluminum source and is directly synthesized from a solution to a slurry, and is specially used for the slurry bed synthesis of methanol or dimethyl ether Slurry catalyst and its preparation method. Background technique: [0002] Slurry bed reactor is especially suitable for cogeneration of heat, electricity and chemicals starting from coal due to its advantages of heat transfer, easy constant temperature operation, simple structure, high energy utilization rate and flexible use. It has been favored by researchers in recent years It is the most advanced reaction bed type currently being developed for the production of alcohols and ethers. [0003] So far, the catalysts used in the slurry bed have been made into a solid catalyst first, and then dispersed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80B01J21/04C07C27/22C07C31/04C07C43/04
CPCY02P20/52
Inventor 高志华黄伟李俊芳阴丽华谢克昌
Owner TAIYUAN UNIV OF TECH
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