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Method for preparation of methanol, dimethyl ether and low-carbon olefin with synthetic gas

A technology of low-carbon olefins and dimethyl ether, which is applied in chemical instruments and methods, preparation of hydroxyl compounds, preparation of organic compounds, etc., can solve the problems of CO conversion rate, target product selectivity and low carbon utilization rate, and achieve high The effect of carbon utilization and high CO conversion

Active Publication Date: 2015-05-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The object of the present invention is to overcome the defects in the above-mentioned prior art of the direct preparation of methanol, dimethyl ether and light olefins from synthesis gas, the low CO conversion rate, target product selectivity and low carbon utilization rate, and provide a A method for producing methanol, dimethyl ether and light olefins from synthesis gas with high CO conversion rate, target product selectivity and carbon utilization rate

Method used

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preparation example Construction

[0032] In the preparation method of the above catalyst, preferably, the transition metal inducer is 0.1-10% by weight of the weight of the carrier.

[0033] In the preparation method of the above catalyst, preferably, the electroless plating solution contains H 2 PO 2 - ions and / or BH 4 - An aqueous solution of ion reducing agent, M ion and complexing agent; the complexing agent is one or more of glacial acetic acid, sodium citrate, ammonia water, ethylenediamine and sodium tartrate. The pH value of the electroless plating solution is usually adjusted by a pH regulator, and the pH regulator can be one or more of ammonia water, sodium hydroxide, potassium hydroxide, sodium carbonate and sodium bicarbonate.

[0034] Wherein, in the electroless plating solution, the concentration of the M ion is 0.01-4 mol / L, the concentration of the reducing agent is 0.1-1 mol / L, and the concentration of the complexing agent is 0.1-4 mol / L.

[0035] In the preparation method of the above ca...

Embodiment 1

[0049] 1. Preparation of mixed oxide support

[0050] With 60 grams of ZnO (industrial pure, the same below) 20 grams of SiO 2 (coarse-porous silica gel, Qingdao Ocean Chemical Factory, the same below) was added to 200 grams of distilled water, and 5 grams of MnO was added thereto under vigorous stirring. 2 (technical pure), then drop into the ZrOCl of 20% by weight simultaneously 2 (analytical pure, Xinghua Songhe Chemical Reagent Factory) 130 grams of aqueous solution, 20% by weight of CaCl 2 (Industrial pure) 49 grams of aqueous solution and 10 grams of HCl (analytical pure, produced by Beijing Chemical Plant) aqueous solution of 1 weight %, then dropwise add 50 grams of sodium carbonate (analytical pure, produced by Beijing Chemical Plant) aqueous solution of 5 % by weight, dropwise After completion, continue to stir for 1 hour, filter the resulting precipitate and wash it repeatedly with distilled water until there is no Cl - Existence, after drying at 110°C, bake at 5...

Embodiment 2

[0057] 1. Preparation of carrier

[0058] 7.5 g FeCl 3 (analytical pure, Jiangyin Hengye Chemical Co., Ltd., the same below), 7.5 grams of SnCl 4 (analytically pure, Liaoyang Dingxin Chemical Co., Ltd.), 25 grams of ZnO were mixed evenly, and then 60 grams of activated carbon powder (Fujian Province Shaowu Xinsen Carbon Industry Co., Ltd.) was added and fully kneaded to obtain 100 grams of carrier.

[0059] 2. Preparation of catalyst

[0060] Add 10 grams of the carrier obtained above to 50 mL of 0.3 mol / L Ni(NO 3 ) 3 (Analytical pure, Yunli Chemical Plant, Xia County, Shanxi Province) in aqueous solution, adopt equal volume impregnation method to impregnate at room temperature for 4 hours, dry at 110°C for 4 hours, then roast at 400°C for 2 hours, use an excess concentration of 0.5mol / L NaH 2 PO 2 The above product was reduced, filtered, and the filtered product was dried to obtain a support loaded with 8.1% by weight of the inducer Ni.

[0061] 400mL 0.2mol / L KBH 4 s...

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Abstract

The invention provides a method for preparation of methanol, dimethyl ether and low-carbon olefin with synthetic gas, which comprises contacting synthetic gas with a catalyst under the condition that the synthetic gas can be converted into methanol, dimethyl ether and low-carbon olefin. The catalyst contains amorphous alloy and a carrier, the amorphous alloy is a cladding material applied on the carrier and is composed of M and X, wherein X is B and / or P, and M is selected from one or more of IB, IVB, VIIB, VIII and lanthanide elements in the periodic table of elements. The method provided in the invention has the advantages of high CO conversion rate, high selectivity for target products and high carbon utilization rate.

Description

technical field [0001] The invention relates to a method for preparing methanol, dimethyl ether and light olefins from synthesis gas. Background technique [0002] Methanol synthesis is an extremely important chemical process. At present, copper-zinc-aluminum catalyst is the main component of low-pressure methanol synthesis catalyst widely used in industry. It is usually prepared by co-precipitation method, and the obtained catalyst is a mixture of copper-zinc-aluminum oxides. For example, the co-precipitation method proposed by U.S. Patent No. 4,436,833 uses sodium carbonate as a precipitant to make the nitrate mixture of copper, zinc and aluminum form carbonate precipitates, wash the sodium ions with distilled water, and become Copper-zinc-aluminum oxide mixture is used to catalyze the reaction of synthesizing methanol. The disadvantage of the catalyst is that it is difficult to wash the sodium ions, and it is difficult to control the temperature of the reduction process,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C29/153B01J23/80B01J23/889B01J23/10B01J29/46B01J27/19B01J29/85C07C31/04C07C43/04C07C1/04
CPCY02P20/52
Inventor 付强张晓昕慕旭宏宗保宁
Owner CHINA PETROLEUM & CHEM CORP
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