Activated carbon carrier treatment method, and preparation method and application of palladium-carbon catalyst
The technology of a palladium-carbon catalyst and a treatment method, applied in the field of catalysis, can solve problems such as uninvolved influence, and achieve the effects of good anti-poisoning ability, easy popularization and application, and high reaction performance
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Embodiment 1-1
[0032] The processing method of the activated carbon carrier of the present embodiment may further comprise the steps:
[0033] Step 1. Under normal temperature conditions, the particle size of 100g is 200 mesh, and the specific surface area is 1500m 2 The gac / g is placed in 1000g pretreatment solution and soaked for 24h, filters, washes the retentate with deionized water, filters, and obtains pretreatment gac; described pretreatment solution is the nitric acid solution that mass concentration is 10%;
[0034] Step 2, adding the pretreated activated carbon described in step 1 into 1500g of buffer solution, stirring at room temperature for 12h, filtering, and washing the filtered activated carbon to obtain an activated carbon carrier; the buffer solution is acetic acid with a pH of 4±0.1 - sodium acetate buffer solution;
[0035] It was determined that the pH value of the activated carbon carrier was 4.
Embodiment 1-2
[0042] The processing method of the activated carbon carrier of the present embodiment may further comprise the steps:
[0043] Step 1. Under normal temperature conditions, 100g of particles with a particle size of 400 mesh and a specific surface area of 950m 2 The gac / g is placed in 2000g pretreatment solution and soaked for 24h, filters, washes the retentate with deionized water, and filters to obtain pretreatment gac; the pretreatment solution is hydrogen peroxide with a mass concentration of 10%, which can also be 10% nitric acid solution;
[0044] Step 2. Add the pretreated activated carbon described in step 1 into 1000g of buffer solution, stir for 12 hours at room temperature, filter, and do not wash the filtered activated carbon to obtain an activated carbon carrier; the buffer solution is carbonic acid with a pH of 10±0.2 Sodium-sodium bicarbonate buffer solution.
[0045] It was determined that the pH value of the activated carbon carrier was 10.
Embodiment 1-3
[0047] The processing method of the activated carbon carrier of the present embodiment may further comprise the steps:
[0048] Step 1. Under normal temperature conditions, 100g of particles with a particle size of 300 mesh and a specific surface area of 1200m 2 The gac / g is placed in 1500g pretreatment solution and soaked for 24h, filters, washes the retentate with deionized water, filters, and obtains pretreatment gac; described pretreatment solution is the sodium hydroxide solution that mass concentration is 10%, also can Be the potassium hydroxide solution that mass concentration is 10%;
[0049] Step 2. Add the pretreated activated carbon described in step 1 into 2000g of buffer solution, stir for 12 hours at room temperature, filter, and filter the activated carbon without washing to obtain the activated carbon carrier; the buffer solution is acetic acid with a pH of 4 ± 0.1 - Sodium acetate buffer solution.
[0050] It was determined that the pH value of the activat...
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Abstract
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