Production of isopropyl levulinate from furfural catalyzed by zirconium phosphate supported on nanosponge MFI zeolite through catalytic transfer hydrogenation
Tiantian Wang , Longbin Deng , Shuaishuai Zhou , Zhenheng Diao , Hongyan Wang , Congzhen Qiao , Yajie Tian
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引用次数: 0
Abstract
Alkyl levulinate is a kind of high value chemicals derived from biomass. Here, a nanosponge ZSM-5 supporting zirconium phosphate (ZrPO/NPZ) catalyst is prepared and used for catalytic transfer hydrogenation of furfural (FUR) to produce isopropyl levulinate (IPL) using isopropanol as H-donor. ZrPO specie provides Lewis acid sites together with additional Brønsted acid sites by ZSM-5 zeolite. Using the hierarchical ZSM-5 with exposed surface area as support, the dispersion of ZrPO active species increases, which facilitates the adsorption and conversion of FUR with the generation of 2-(isopropoxymethyl)furan (IPMF). The moderate Brønsted acid sites by zeolite promote the adsorption and activation of isopropanol, thus increasing the conversion rates of intermediate IPMF with formation of IPL. Furthermore, improved proportions of Brønsted/Lewis was detected with the increase of P/Zr ratios in the prepared catalysts, which is adverse for conversion of FUR. The optimized ZrPO/NPZ catalyst with P/Zr of 1 gives the best catalytic performance with IPL yield of ∼69 wt% after 3 h reaction at 200 °C (TOF of 6.98 mmol g−1 h−1), which provides an essential catalyst to produce IPL from FUR.
期刊介绍:
Microporous and Mesoporous Materials covers novel and significant aspects of porous solids classified as either microporous (pore size up to 2 nm) or mesoporous (pore size 2 to 50 nm). The porosity should have a specific impact on the material properties or application. Typical examples are zeolites and zeolite-like materials, pillared materials, clathrasils and clathrates, carbon molecular sieves, ordered mesoporous materials, organic/inorganic porous hybrid materials, or porous metal oxides. Both natural and synthetic porous materials are within the scope of the journal.
Topics which are particularly of interest include:
All aspects of natural microporous and mesoporous solids
The synthesis of crystalline or amorphous porous materials
The physico-chemical characterization of microporous and mesoporous solids, especially spectroscopic and microscopic
The modification of microporous and mesoporous solids, for example by ion exchange or solid-state reactions
All topics related to diffusion of mobile species in the pores of microporous and mesoporous materials
Adsorption (and other separation techniques) using microporous or mesoporous adsorbents
Catalysis by microporous and mesoporous materials
Host/guest interactions
Theoretical chemistry and modelling of host/guest interactions
All topics related to the application of microporous and mesoporous materials in industrial catalysis, separation technology, environmental protection, electrochemistry, membranes, sensors, optical devices, etc.