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Catalyst for preparing sodium gluconate

A technology of sodium gluconate and catalyst, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, carboxylate preparation, etc., can solve the problems such as the introduction of Bi metal and difficulty in catalyst recovery, and achieve good catalytic effect. , the effect of large economic benefits

Inactive Publication Date: 2018-07-10
云南森博混凝土外加剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, all the preparations of sodium gluconate on the market mainly use catalysts with C as a carrier, but the catalysts have not been able to think of introducing Bi metal to protect Pd.
Therefore, catalysts on the market generally have the problem of difficult recovery.

Method used

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  • Catalyst for preparing sodium gluconate
  • Catalyst for preparing sodium gluconate

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Experimental program
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Effect test

Embodiment 1

[0036] A catalyst for preparing sodium gluconate, consisting of the following components: Pretreated activated carbon powder: 80 parts, bismuth nitrate: 0.8 parts, palladium chloride: 0.8 parts, hydrochloric acid: 12 parts, distilled water: 220 parts Parts, sodium borohydride: 2 parts.

[0037] The described catalyst that is used to prepare sodium gluconate, gac pretreatment is to wash 300 mesh gac with 5% sodium hydroxide alkali of 4 times of amount, filter dry, wash with water to Ph value neutrality, then use 4 times of amount of Pickle with 5% hydrochloric acid / nitric acid solution, add 0.04 times the amount of salicylic acid to participate in the complexation reaction, wash with 8 times distilled water until the pH value is neutral.

Embodiment 2

[0039] A catalyst for preparing sodium gluconate, consisting of the following components: pretreated activated carbon powder: 60 parts, bismuth nitrate: 0.6 parts, palladium chloride: 0.6 parts, hydrochloric acid: 8 parts, distilled water: 200 parts Parts, sodium borohydride: 1 part.

[0040] The described catalyst that is used to prepare sodium gluconate, gac pretreatment is to wash 300 mesh gac with 5% sodium hydroxide alkali of 4 times of amount, filter dry, wash with water to Ph value neutrality, then use 4 times of amount of Pickle with 5% hydrochloric acid / nitric acid solution, add 0.04 times the amount of salicylic acid to participate in the complexation reaction, wash with 8 times distilled water until the pH value is neutral.

Embodiment 3

[0042] Described catalyst for preparing sodium gluconate, its component parts by weight are: activated carbon powder after pretreatment: 70 parts, bismuth nitrate: 0.7 part, palladium chloride: 0.7 part, hydrochloric acid: 10 parts, distilled water: 210 parts, sodium borohydride: 1.5 parts.

[0043] The present invention relates to a kind of catalyst that is used for preparing sodium gluconate, and its specific mode of operation is as follows:

[0044] 1. Pretreatment of activated carbon:

[0045] (1) Material preparation: design of weight components: 300 mesh activated carbon: 100 parts; 5% sodium hydroxide: 400 parts; 5% hydrochloric acid / nitric acid solution: 400 parts; salicylic acid: 4 parts; distilled water: 800 parts ;

[0046] (2) Preparation specific operation steps:

[0047] 1. Take 100 parts of 300-mesh activated carbon powder and add 400 parts of 5% sodium hydroxide solution, boil for 30 minutes;

[0048] 2. After reacting for 30 minutes, suction filter the rea...

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PUM

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Abstract

The invention discloses a catalyst for preparing sodium gluconate, and relates to the catalyst used in the process of preparation of sodium gluconate with good coagulability and water reducing property. The catalyst is composed of the following components in parts by weight: 60-80 parts of activated carbon powder after pretreatment, 0.6-0.8 part of bismuth nitrate, 0.6-0.8 part of palladium chloride, 8-12 parts of hydrochloric acid, 200-220 parts of distilled water, and 1-2 parts of sodium borohydride. The catalyst is prepared with a 300 mesh active carbon powder as a base material. Firstly, the activated carbon powder is washed and pretreated, then bismuth nitrate and palladium chloride are added, reaction is performed, and the activated carbon powder adsorbs Bi<+> and Pd<2+> to prepare the catalyst. The catalyst prepared by the method has good catalytic effect on synthesis of sodium gluconate, can be recycled and reused and has great economic benefits.

Description

technical field [0001] The invention relates to a catalyst used in the preparation process of sodium gluconate with good coagulation and water reducing properties. Background technique [0002] In the field of construction concrete, the application of water reducing agent and retarder is extremely extensive. The use of water reducing agent can reduce the mixing water while ensuring the slump of concrete, and the use of appropriate water reducing agent can reduce the cost of the project. Retarder can effectively shorten the setting time of concrete and enhance the strength of concrete, especially in areas or seasons where the temperature is relatively high, the concrete sets faster and the fluidity of concrete is weakened, but the retarder Adding it can effectively reduce the speed of cement hydration and heat of hydration, which can ensure that the concrete has enough time for hydration and coagulation, which has great advantages in the strength and performance of concrete....

Claims

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Application Information

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IPC IPC(8): B01J23/644B01J37/02B01J37/16C07C51/295C07C59/105
CPCB01J37/0207B01J23/6447B01J37/16C07C51/295C07C59/105
Inventor 阿光强徐兴爱阿光城郭军唐凯
Owner 云南森博混凝土外加剂有限公司
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