Studies On Ni/ZrO₂Catalysts Prepared From Zirconium-based MOF Precursor For Benzene Hydrogenation And Synthesis Of Ethyl Tert-Butyl Ether On A H₂SO₄Activated Bentonite

Metal-organic frameworks also called metal-organic coordination polymers, iscomposed of inorganic metal ions and organic ligands formed by self-assembly, withthe one-dimensional, two-dimensional or three-dimensional periodic networkstructure crystal material. It has a large surface area and high porosity, has greatpotential applications in many areas, such as gas adsorption, molecular recognition,fluorescence, ion exchange and catalysis.In this work, we use zirconium-based MOF material nano@UiO-66which havea large surface area and high thermal stability as a carrier and precursor loaded metalNi, prepared a series of15%NU catalysts in different temperatures and NU-450catalysts in different Ni levels, and Ni/ZrO2catalyst prepared using inorganicsubstanc. XRD, N2adsorption-desorption, TPR, TPD and elemental analysis are usedto investigate the structure and properties of the catalysts. The catalytic activity ofas-prepared samples were evaluated of benzene hydrogenation. The results showedthat,15%Ni content, NU-450catalyst has a larger specific surface area, high Nidispersibility, preferably benzene hydrogenation activity, and significantly better thanNi/ZrO2which prepared by inorganic substance.In addition, bentonite is a natural earthy hydrous silicate minerals, modified afteracidification has a larger surface area, ideal pore structure, good heat resistance andmechanical stability as well as more novel acid properties. Bentonites have beentreated by different concentrations H2SO4solution, and x%H2SO4-BN (x=20,25,30,35,40) catalysts are obtained. XRD, BET, FT-IR, Py-IR and NH3-TPD are used toinvestigate the structure and properties of the bentonites, suggesting that the skeletonstructure of the bentonites is not changed, its surface area and pore volume are greatlyimproved in turn, and the week acid sites increased. Evaluation reaction of synthesisof ETBE from ethanol (EtOH) and tert-butyl alcohol (TBA) shows that30%H2SO4-BN have the best catalytic activity, and the optimum experimental conditionhas been investigated.