Study On Catalytic Hydrogenation And Catalytic Degradation Of Fe-Si-B-P Amorphous Alloy

The arylamine compounds containing a readily reducible group such as-C=C-,-C?C-,-N=N-are important raw materials for synthetic dyes,pharmaceuticals,and other chemical industrial products.Among them,methylene blue and other azo dyes containing-N=N-bonds are the main pollutants of water pollution.Moreover,aminophenylacetylene containing the congruent-C?C-bond is an important raw material for the synthesis of erlotinib hydrochloride and it is one of the most effective drugs in the treatment of lung cancer.Then,how to obtain safe drinking water resources from nature,how to make scarce drugs such as aminophenylacetylene is one of the most concerned issues of human beings.At the same time,how to selectively hydrogenate a nitroaromatic compound containing an easy-reducing group such as an alkynyl group or a carbon-carbon double bond by using a catalyst and how to treat the dye wastewater more efficiently by using a catalyst is an urgent problem to be solved at present.In this paper,Fe-Si-B-P based amorphous/micro-nanocrystalline powder was first studied.Secondly,their effects on the catalytic hydrogenation of 4-nitrophenylacetylene and the catalytic degradation of high concentration methylene blue colored dyes were analyzed.In this paper,an iron-based amorphous porous catalyst(Fe₇₆Si_7.2B_9.6P_7.2 porous catalyst)was prepared by chemical de-alloying method,and catalytic hydrogenation of4-nitrophenylacetylene was carried out in a hydrazine hydrate environment.The conversion of 4-nitrophenylacetylene to 4-aminophenylacetylene was 100%and the selectivity was 56.17%.It is indicated that the catalyst can effectively control the accumulation of harmful intermediates such as azo compounds,oxidized azo compounds and hydrogenated azo compounds in the reaction.It also proves that Fe-Si-B-P based amorphous alloys has high activity in catalytic hydrogenation and has good application prospect in catalytic hydrogenation and catalytic oxidation.At the same time,we have prepared a(Fe₈₇Si₅B₂P₃Nb₂Cu₁)₈₆Ni₁₄ amorphous powder catalyst with enhanced effect by ball milling method.This amorphous catalyst showed outstanding degradation efficiency in the degradation of methylene blue solution.Under the same conditions,the experiment was carried out with Fe₈₇Si₅B₂P₃Nb₂Cu₁.The morphology,structure and catalytic degradation effects before and after amorphous treatment were characterized by XRD,SEM and UV-Vis.We found that the(Fe₈₇Si₅B₂P₃Nb₂Cu₁)₈₆Ni₁₄ amorphous powder prepared by ball milling has a catalytic degradation efficiency of 99.99%for methylene blue.The methylene blue dye is almost completely degraded.The degradation efficiency of(Fe₈₇Si₅B₂P₃Nb₂Cu₁)₈₆Ni₁₄4 amorphous alloy is obviously better than that of Fe₈₇Si₅B₂P₃Nb₂Cu₁ amorphous alloy,which greatly shortens the reaction time.It is also due to the special structure of the amorphous alloy atomic arrangement that makes it more degradable for organic dye wastewater.Therefore,Fe-Si-B-P based amorphous alloy has great potential application value in the field of water treatment.