Method for preparing hydroxy acid and derivatives thereof, as well as propylene glycol, propanol, ethylene glycol and ethanol from CO or CO2

Abstract

The invention relates to a tandem substitution rearrangement elimination reaction (referred to as TSRE reaction) according to element chemistry, introduces new rules of reductive coupling reaction of CO2 or CO according to a synthesis reaction mode which is found recently and designs a new technical route or technical way for synthesizing lactic acid and derivatives thereof, as well as a propylene glycol product from the CO or the CO2. By adopting the technical route or the technical way, hydroxy acid, hydroxy acid salts and hydroxy acid esters, as well as propylene glycol, propanol, ethylene glycol, ethanol and other products can be directly synthesized by taking the CO or the CO2 as a raw material. Compared with the traditional technical route or the technical way for preparing these products, petroleum resources are not required, the synthesis conditions are mild, the low-pressure and normal-temperature conditions are generally selected, the preparation cost is reduced by above 40%, the consumption of water and energy is greatly reduced, and the new technical route or the technical way is more suitable for large-scale industrialization and commercial development.

Description

[0001] The present invention relates to a tandem substitution rearrangement elimination reaction (abbreviated as TSRE reaction) based on elemental chemistry, the CO 2 or CO reductive coupling reaction new rules, design a new CO or CO 2 The technical route or technical route for synthesizing lactic acid and its derivatives and propylene glycol products. Using such a technical route or technical route, it is possible to use CO or CO 2 Synthesize hydroxy acids, hydroxy acid salts, hydroxy acid esters and propylene glycol, propanol, ethylene glycol, ethanol and other products directly as raw materials. Compared with the traditional technical routes or technical approaches for preparing these products, no petroleum resources are required. Synthetic Mild conditions, generally under the condition of low pressure and normal temperature, the preparation cost is reduced by more than 40%, the consumption of water and energy is greatly reduced, and it is more suitable for large-scale indust...

AI Technical Summary

Problems solved by technology

Especially under the conditions of this chemical reaction environment, the above-mentioned intermediates have greatly improved the function of adding Fe, Al and other metals to crack hydrogen-containing raw materials such as water and alcohol into H negative ions, almost more than many traditional CO 2 The function of the catalyst required for the catalytic reaction with CO is even higher, that is, the catalytic effect is even higher. In this way, it is basically confirmed that the past about CO 2 In the field of resource utilization in the synthesis of C 2 、C 3 The research direction of the screening work of catalysts in terms of compounds, and for CO 2 Synthesize C as raw material 2 、C 3 The screening of organic catalysts has always been a work that governments and companies in many countries have invested a lot of manpower, material and financial resources and are still investing a lot but with little effect.

The reaction direction studied in the past requires a higher temperature, generally above 120 ° C, and the reaction direction of the new reaction discovered in this invention: the two factors that require low temperature (generally room temperature) and alkaline pH value are the factors that determine the CO 2 react with CO to form C 2 、C 3 The most important factor in the effect of organic matter, other catalysts have little effect, so it is not necessary to choose noble metal catalysts such as palladium