Process-Intensification Of The 3-Butenenitrile Hydrolyzation By Electro-Catalysis

3-butenoic acid is an important chemical raw material and organic intermediate,which is widely used in drugs,resins,fungicides,and surface coatings.In industry,it is mainly prepared by hydrolysis of 3-butenenitrile.The traditional hydrolysis process is based on the catalysis of strong acid followed by the addition of inorganic strong bases to neutralize,thus resulting in a large amount of inorganic salts with low added value,which not only pollutes the environment but also consumes a lot of extra energy for desalination.Electrocatalysis is a process enhancement technology that has received much attention in recent years and the coupling of electric field and reaction can effectively improve the reaction efficiency.At the same time,the hydrogen ions and hydroxide ions generated under water electrolysis conditions can also accelerate the hydrolysis process and do not introduce new byproducts.In this paper the process of electrocatalytically enhancing the hydrolysis of 3-butenenitrile was systematically explored.A new electro-catalytic reaction device based on proton exchange membrane was studied,and the manganese oxide catalyst was introduced.The hydrolysis behavior of anode and cathode was investigated respectively.And systematically optimized process parameters such as electrode material,voltage,solution pH,reaction concentration,temperature,co-solvent and so on.The amount of strong acid and strong alkali can be reduced by two orders of magnitude in the reaction process through the optimization of the electrolysis unit.The results also show that the alkaline hydrolysis efficiency of cathode zone is higher than that of anode zone under electrolytic condition.Even the initial pH value of the solution was 7,the accumulation of hydroxyl in the cathode area can still lead to significant hydrolysis of cyanide,under the action of electric field.However,there are a large number of intermediates in the cathode products which are not completely hydrolyzed.Further improvement is required in the introduction of catalysts and improvement of the reaction unit.Electro-catalytic strengthening can effectively reduce the by-products of inorganic salts and has important application prospects in chemical reaction.On this basis,we have proposed the idea of enhancing the catalytic hydrolysis of 3-butenenitrile by photo-electrical combination.Photovoltaic cells are used to drive electrocatalytic reactions to further reduce industrial power consumption.Based on the traditional photovoltaic panels,the feasibility of this idea was verified,and further developed a highly flexible,structurally flexible photovoltaic textile that attempts to reduce the installation costs of the photovoltaic system construction process and improve the impact stability in long-term use.