Introduction SAPO-34 is a silicoaluminophosphate zeolite with 8-membered ring windows (~0.38nm) displaying chabazite structure. SAPO-34 is an efficient catalyst showing improved catalytic performance in reactions such as methanol conversion to olefins [1], oxidative dehydrogenation of propane [2], conversion of light alkenes [3]. Its catalytic properties are mainly attributed to its mild acidit...

Silicoaluminophosphate SAPO-34 molecular sieve nanocrystals have been prepared by a post-synthesis milling and recrystallization method, which is further proven to be universally applicable to other SAPO molecular sieves. The obtained SAPO-34 with reduced Si enrichment on the external surface shows considerably improved catalytic performance in the MTO reaction.

The ethanol dispersion method was employed to synthesize a series of MnOx/SAPO-34 catalysts using SAPO-34 with the hierarchical pore structure as zeolite carrier, which were prepared by facile acid treatment citric acid. Physicochemical properties characterized XRD, XPS, BET, TEM, NH3-TPD, SEM, FT-IR, Py-IR, H2-TRP and TG/DTG. NH3-SCR performances evaluated at low temperatures. Results show tha...

Using an organosilane surfactant as the mesopore director, hierarchical porous silicoaluminophosphate SAPO-34 is obtained as an assembly of nanocrystallites intergrown into cubic micrometer-sized crystals, which show excellent performance in MTO reactions with a remarkably prolonged catalyst lifetime and enhanced selectivity of ethylene and propylene compared to the conventional microporous SAP...

Metal-incorporated SAPO-34 catalysts were prepared by one-step hydrothermal method. Effects of various parameters including the types metal ions, Cu2+ sources, structure directing agents (SDAs), temperature and time on catalyst activity metal-incorporated investigated. Three (Cu/SAPO-34, Fe/SAPO-34 Mn/SAPO-34) successfully obtained. Compared with Mn/SAPO-34 catalysts, Cu/SAPO-34 revealed comple...

A detailed investigation of the hydrothermal crystallization SAPO-34 in presence novel 1-propylpyridinium hydroxide ([PrPy]OH) organic structural directing agent is presented. The synthesis conditions are systematically tuned to investigate effects various parameters (viz. concentrations each reactant, time, and temperature) on nucleation SAPO-34. results show that a careful variation formation...

Efficient and one-pot conversion of biomass-derived carbohydrate into highly value-added 5-hydroxymethylfurfural (HMF) is a crucial reaction step for the valorization biomass resources toward bio-based chemicals fuels. In this work, series Sn/SAPO-34 catalysts were prepared through impregnation evaluated in glucose to HMF. The physicochemical properties systematically characterized by SEM, XRD,...