A method for hydrogenation and upgrading of biomass-based polyols
A technology for hydrogenation and upgrading, biomass, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., can solve the problems of high content and affecting the performance of downstream polyurethane materials , to achieve the effect of high removal rate, low cost and good thermal stability
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Embodiment 1
[0021] A method for hydrogenation and upgrading of biomass-based polyols, comprising the steps of:
[0022] (1) Add 100g of ethylene glycol and 3g of sulfuric acid into a three-necked flask equipped with a condenser, stir to mix evenly, raise the temperature to 160°C, add 20g of wheat straw under stirring, and react for 60 minutes. After 60 minutes, quickly cool the three-necked flask to terminate the reaction , the hydroxyl value of the biomass-based polyol obtained was 820 mgKOH / g, and the carbonyl compound content contained therein was 14.3%.
[0023] (2) Preparation of acid-modified attapulgite loaded with 10% Cu 0.1 NiCoB catalyst is prepared by the following steps:
[0024] a. Prepare Cu, Ni, and Co metal chloride aqueous solution according to the above catalyst composition, add the acid-modified attapulgite carrier powder prepared in Example 2 of the patent CN104084212 B into the aqueous solution, under the condition of normal temperature and negative pressure of 0.09M...
Embodiment 2
[0028] A method for hydrogenation and upgrading of biomass-based polyols, comprising the steps of:
[0029] (1) Add 80g of polyethylene glycol 400 and 6g of nitric acid into a three-necked flask equipped with a condenser, stir to make it evenly mixed, heat up to 150°C, add 15g of bagasse under stirring, and quickly put the three-necked flask into place after 120 minutes of reaction. The reaction was terminated by cooling, and the hydroxyl value of the biomass-based polyol obtained was 258 mgKOH / g, and the carbonyl compound content contained therein was 12.7%.
[0030] (2) Preparation of 5% Cu 0.25 NiCoB / SiO 2 The catalyst is prepared through the following steps:
[0031] a. Prepare Cu, Ni, Co metal chloride aqueous solution according to the above catalyst composition, SiO 2 Add the carrier powder into the aqueous solution, vacuum impregnate at room temperature and negative pressure 0.095MPa for 24 hours, dry a large amount of water in an oven at 80°C, and then dry it in an ...
Embodiment 3
[0035] A method for hydrogenation and upgrading of biomass-based polyols, comprising the steps of:
[0036] (1) Add 90g of diethylene glycol and 1g of hydrochloric acid into a three-necked flask equipped with a condenser, stir to make it evenly mixed, raise the temperature to 200°C, add 30g of eucalyptus wood powder under stirring, and react for 90 minutes and then quickly cool the three-necked flask to terminate After the reaction, the hydroxyl value of the biomass-based polyol obtained was 406 mgKOH / g, and the carbonyl compound content contained therein was 13.7%.
[0037] (2) Preparation of 30% Cu 0.6 NiCoB / γ-Al 2 o 3 Catalyst, comprises the steps:
[0038] a. Prepare Cu, Ni, Co metal chloride aqueous solution according to the above catalyst composition, and γ-Al 2 o 3 Add the carrier powder into the aqueous solution, vacuum impregnate at room temperature and negative pressure 0.1MPa for 24 hours, dry a large amount of water in an oven at 80°C, and then dry it in an ov...
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