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
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[0035] Example 1
[0036] A catalyst for preparing sodium gluconate, comprising the following components: pretreated activated carbon powder: 80 parts, bismuth nitrate: 0.8 part, palladium chloride: 0.8 part, hydrochloric acid: 12 parts, distilled water: 220 parts parts, sodium borohydride: 2 parts.
[0037] The described catalyst for preparing sodium gluconate, activated carbon pretreatment is to wash 300 mesh activated carbon with 4 times the amount of 5% sodium hydroxide alkali, filter dry, wash with water until the pH value is neutral, and then use 4 times the amount of sodium hydroxide. Pickling with 5% hydrochloric acid / nitric acid solution, adding 0.04 times the amount of salicylic acid to participate in the complexation reaction, and washing with 8 times distilled water until the pH value is neutral.
Example Embodiment
[0038] Example 2
[0039] A catalyst for preparing sodium gluconate, comprising the following components: pretreated activated carbon powder: 60 parts, bismuth nitrate: 0.6 part, palladium chloride: 0.6 part, hydrochloric acid: 8 parts, distilled water: 200 parts parts, sodium borohydride: 1 part.
[0040] The described catalyst for preparing sodium gluconate, activated carbon pretreatment is to wash 300 mesh activated carbon with 4 times the amount of 5% sodium hydroxide alkali, filter dry, wash with water until the pH value is neutral, and then use 4 times the amount of sodium hydroxide. Pickling with 5% hydrochloric acid / nitric acid solution, adding 0.04 times the amount of salicylic acid to participate in the complexation reaction, and washing with 8 times distilled water until the pH value is neutral.
Example Embodiment
[0041] Example 3
[0042] Said catalyst for preparing sodium gluconate, its components by weight are: pretreated activated carbon powder: 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 for preparing sodium gluconate, and its concrete operation mode 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) The specific operation steps of preparation:
[0047] 1. Take 100 parts of 300 mesh activated carbon powder and add 400 parts of 5% sodium hydroxide solution, boil for 30min;
[0048] 2. After the reaction for 30min, the reaction solution was subjected t...
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