A composite material ZSM-5@Co-MOF containing Co-MOF and ZSM-5 was successfully prepared by steam-assisted crystallization of Co-MOF on the zeolite surface. Compared to physically mixing Co-MOF on the zeolite surfaces, Co-MOF nanosheets were uniformly attached to external surfaces of the ZSM-5 crystals because of the enhanced interaction between zeolite and Co-MOF in the composite. In addition, the Co-MOF was distributed as a nanosheet structure, and its dispersibility was greatly enhanced, in which this behavior led to more uniform distribution of the deposited active sites. Interestingly, the designed composite exhibited an excellent catalytic performance for the epoxidation of α-pinene with air. Compared to isolated Co-MOF and ZSM-5, high yield of the product (94.4%) was obtained over the 0.5ZSM-5@Co-MOF-150 composite due to the highly dispersed Co-MOF nanosheet. This opens up interesting prospects for developing new zeolite@MOF composite catalysts as efficient heterogeneous catalysts.

1,3,5-benzenetricarboxylate (BTC) and 4,4'-bipyridine (BIPY) are employed in the synthesis of dual ligands Ni-MOFs. The magnetic Ni@CN nanocatalyst is prepared by direct pyrolysis of Ni-MOFs in Hy atmosphere, which exhibited excellent activity in selective hydrogenation of nitrobenzene (NB) to aniline (AN) at 60 degrees C, 2.0 MPa Hy. The conversion of NB can reach 99.1 mol%, and the selectivity of AN is over 99 %. A series of characterizations are obtained by XRD, Raman, XPS, SEM, TEM, TPR and TGA. It is found that the synergic effect of Ni species and N contributes to the increase of catalytic activity of the catalyst. Cycling tests proved that the prepared catalyst could be reused ten times without a visible reduction in catalytic activity of hydrogenation. The excellent stability and activity of Ni@CN nanocatalyst could be assigned to the porosity of carbon material doped with nitrogen, derived from dual ligands Ni-MOFs.

A method for synthesizing Co-MOF by rapidly rotating hydrothermal crystallization is proposed. When the rotation speed was 150 rpm, only 2 h was needed to synthesize Co-MOF-150-2 with high catalytic activity and stability.

Biocarbon supported Ni catalysts have been prepared by facile impregnation of Ni species by microwave-heating and used for selective hydrogenation of nitrobenzene to cyclohexylamine.These catalysts were characterized by X-ray diffraction, transmission electron microscope and X-ray photoelectron spectroscopy.For the hydrogenation of nitrobenzene, 10％ Ni/CSC-II exhibits the best catalytic activity to achieve 100％conversion of nitrobenzene and 96 .7％ selectivity of cyclohexylamine under reaction conditions of 200℃, 2.0 MPa H2 and 100 mg LiOH.The results show that microwave heating can improve the activity of the catalyst.

Biocarbon supported Ni catalysts have been prepared by facile impregnation of Ni species by microwave-heating and used for selective hydrogenation of nitrobenzene to cyclohexylamine. These catalysts were characterized by X-ray diffraction, Raman spectra, N2 sorption measurement, X-ray photoelectron spectroscopy, temperature programmed reduction of H2 and H2 temperature-programmed desorption. The morphology and particle size of catalysts were imaged by scanning electron microscope and transmission electron microscope. For the hydrogenation of nitrobenzene to cyclohexylamine, 10%Ni/CSC-II(b) exhibits the best catalytic activity to achieve 100 mol% conversion of nitrobenzene and 96.7% selectivity of cyclohexylamine under reaction conditions of 2.0 MPa H2 and 200 °C, ascribed to high dispersion of Ni species and formation of nanosized Ni particles on the support aided by microwave-heating. Thus-prepared Ni/CSC catalyst is greatly activated, in which the addition of precious metal like Rh is totally avoided.

Using hydrogen peroxide ( H2 O2 ) as the oxidant and resin supported heteropolyacid as the catalyst,cyclododecatriene can be epoxidized to mono?epoxide. The structure of the catalyst is characterized by XRD and SEM. The results show that phosphotungstic acid peroxide catalysts have good catalytic activity on the selective epoxidation of cyclododecatriene. By using hydrogen peroxide as the oxidant and D261?phosphotungstic peroxo acid as the catalyst,the conversion of cyclododecatriene can reach 72. 6% with the mono?epoxide selectivity of 74 . 6% at 60 ℃.