Conversion Of 5-HMF To C₉ Liquid Alkane On Acid-Base Assisted Co Based Catalyst

Biomass not only can alleviate petrochemical energy crisis by the limited resources, also has the properties such as environmental friendly and renewable.5-hydroxy methyl furfural (HMF) which is a platform chemical has rich functional group can serve as an important intermediate to biofuels and commodity chemicals. Therefore, liquid fuel from biomass to replace the traditional petroleum-based gasoline and diesel is the current important research field. This thesis describes the one pot reaction systems further upgrading to potential biofuels with aldol condensation and subsequent hydrogenation reactions over bifunctional MgAlZr complex oxide supported Co-based catalyst. In this subject, the degree of hydrogenation deoxidization is realized and the part of paraffin product is isomerization C9 alkane, and the yield of liquid alkane is 61%. The bifunctional MgAlZr complex oxide catalysts with coexisting acidic and basic functions to catalyst the aldol condensation of 5-HMF and acetone, the yield is more than 99.9%. CuCo alloy catalyst has geometric effect to catalyst hydrogenation deoxidization as surface atom structure and C9 liquid alkane yield is above 90%. The main content of this dissertation are as follows:(1)Design the acid-base catalyst to ctatlysis the aldol condensation for HMF and actone. Introducing Zr into the MgAl-LDH, after MgAlZr-LDH calcination, study the influence for acid-base properties of magnesium aluminum composite oxide.Building part function of bifunctional catalyst which is the acid-base synergistic catalyst to catalysis the aldol condensation reaction. Then study the catalyst’s acid-base properties influence the the aldol condensation reaction, the yield is more than 99.9%. Introducing Co into the MgAlZr-LDH, keep the content of Co and Al, change the Mg/Zr ratio, after CoMgAlZr-LDH calcination reduction, study the influence for acid-base properties of magnesium aluminum composite oxide. Then study the catalyst’s acid-base properties influence the the aldol condensation reaction.(2) For hydrogenation deoxidization reaction, design the catalyst for hydrogenation deoxidization reaction of aldol condensation product. Composite metal oxides load Co base catalyst has certain hydrogenation deoxidization performance, in order to achieve further deoxidization, introducing CuCo hydrotalcite has synergy CuCo alloy catalyst layer board design, realized the hydrogenation deoxidization of pre-conceived and isomerization alkane, CuCo alloy catalyst has geometric effect to catalyst hydrogenation deoxidization (HDO) as surface atom structure and C9 liquid alkane yield is above 90%. Synergistic effect in CuCo alloy were studied. Based on the research train of thought, is expected to build for the reactants and catalyst design with metal atoms geometric matching.(3)Through the first two research, multi-functional catalyst the C9 liquid alkane from 5-HMF in one pot method, and the yield of liquid alkane is 61%. Play a role of acid and base synergy, metal coordination catalysts, catalytic results with acetone aldol condensation reaction and HDO reaction.