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Process for preparing palladium-resin catalyst

A catalyst and resin technology, applied in the field of palladium/resin catalyst preparation, can solve the problems of low catalyst selectivity and low palladium utilization rate

Inactive Publication Date: 2003-11-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The palladium / strongly acidic cation exchange resin catalyst disclosed by GB1010260, US3953517 is the catalyst type mainly used in the synthesis of methyl isobutyl ketone, wherein the preparation of the catalyst is palladium nitrate aqueous solution impregnated strongly acidic ion exchange resin, the activity of the catalyst obtained by the method, Low selectivity needs to be further improved, and the utilization rate of palladium in the catalyst preparation process is low

Method used

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preparation example Construction

[0011] The preparation method of the palladium / resin catalyst of the present invention adopts an ion exchange process in an acid medium, adopts a commonly used ion exchange method, controls the palladium salt in the palladium salt aqueous solution and the concentration of the acid medium according to the difference in the palladium content of the prepared catalyst , the acidic medium is preferably the same acid as the palladium salt anion used.

[0012] The palladium / resin catalyst obtained by the method of the present invention can be used in various suitable chemical reactions, such as catalytic cracking gasoline hydroetherification, acetone and hydrogen one-step synthesis of methyl isobutyl ketone and the like. When the palladium-loaded resin catalyst is used, the ionic palladium should be reduced to metal palladium with hydrogen. The reduction method can be conventional hydrogen reduction, normal temperature reduction or heating reduction, but the temperature should not exc...

Embodiment 1

[0016] Add 200ml hydrogen cationic resin and 200ml deionized water into the container, then add 45ml Pd 2+ The concentration is 0.076mol / L palladium nitrate--nitric acid--water ternary solution for ion exchange, the H in the solution + The concentration is 0.3mol / L. The exchange time is 30 minutes, and then post-stirring is carried out, the waste liquid is filtered out, and washed with deionized water until neutral. A catalyst containing 0.2% palladium (by weight, on a dry basis) was obtained, coded as S-1.

Embodiment 2

[0020] Add 200ml hydrogen cationic resin and 200ml deionized water into the container, then add 40ml Pd 2+ Concentration is the palladium nitrate-nitric acid-water ternary solution of 0.15mol / L to carry out ion exchange, the H in the solution + The concentration is 0.5mol / L. Operation obtains catalyst S-2 containing palladium 0.38% with embodiment 1

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Abstract

The present invention discloses the preparation process of Pd / resin catalyst, and is especially the preparation process of Pd / resin catalyst for the one-step process to synthesize methyl isobutyl ketone. Pd-containing acid solution and resin are made to produce ion exchange to obtain the catalyst with high activity and high selectivity. The present invention has raised Pd utilization, and the catalyst may be used in hydroetherification of gasoline, synthesis of methyl isobutyl ketone with acetone and other reaction process.

Description

1. Technical field [0001] The invention relates to a preparation method of a palladium / resin catalyst, in particular to a preparation method of a palladium / resin catalyst used for synthesizing methyl isobutyl ketone from acetone and hydrogen. 2. Background technology [0002] One-step synthesis of methyl isobutyl ketone with acetone and hydrogen is the most advanced technology for producing methyl isobutyl ketone, and there are many types of catalysts used in this technology. [0003] Ger.Pat.123853 introduces a kind of one-step method synthetic methyl isobutyl ketone catalyst, mixes with the active carbon that carries palladium with hydrogen type ion exchange resin as, and the transformation rate of its acetone is low. [0004] JP119436 discloses a catalyst for synthesizing methyl isobutyl ketone with palladium-loaded activated alumina. According to its disclosed materials, the catalyst has high reaction temperature, low conversion rate, and the selection of product methyl ...

Claims

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Application Information

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IPC IPC(8): B01J31/08
Inventor 王春梅吕志辉侯学伟姜晓晖韩佩君季秀珍
Owner CHINA PETROLEUM & CHEM CORP
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