Tungstophosphoric acid (H3PW12O40) supported on silica-coated magnetite nanoparticles has been prepared and used as a heterogeneous catalyst (Fe3O4@SiO2@HPW) in the condensation of benzaldehyde (B) with glycerol (Gly) for production cyclic acetals. Physicochemical techniques, including scanning electron microscopy (SEM), transmission (TEM), Fourier-transform infrared spectrometry (FTIR), X-ray ...

Pyrolysis oil derived from waste tires consists of sulfur content in the range 7000 to 9000 ppm. For use diesel engines, its must be lowered 10 15 Though conventional hydrodesulfurization is suitable for removal tire pyrolysis oil, high cost provides an avenue alternative desulfurization technologies explored. In this study, oxidative (ODS), a low-cost technology, was explored oil. Two categori...

A newly kind of spinosus loaded-heteropolyacid catalyst Fe3O4@MOF-PMoW (abbreviated as FeMP, M = Cr, Cu and Zr) has been obtained under one-pot method using the various magnetic MOF materials bases. Detailed characterizations have proved out structure, with stinging surface morphologies outside, which benefits for excellent desulfurization performance to larger contact area sulfur compounds muc...

In order to investigate the influences of Lewis metals on acidic properties and catalytic activities, a series of Keggin heteropolyacid (HPA) catalysts, HnPW11MO39 (M = Ti(IV), Cu(II), Al(III), Sn(IV), Fe(III), Cr(III), Zr(IV) and Zn(II); for Ti and Zr, the number of oxygen is 40), were prepared and applied in the esterification and transesterification reactions. Only those cations with moderat...

−The vapor-phase MTBE decomposition was examined in a shell and tube-type catalytic membrane reactor (CMR). 12-Tungstophosphoric acid (PW) was used as a catalyst and poly-2,6-dimethyl-1,4-phenylene oxide (PPO) was used as a polymer material. A single-phase CMR (PW-PPO/Al2O3, type-1) and a composite CMR (PW-PPO/ PPO/Al2O3, type-2) were successfully designed and characterized. It was revealed tha...