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...

Hierarchical SAPO-34 zeolite with high crystallinity and excellent hydrothermal stability was directly synthesized in the nanoscale confined environment provided by the natural layered material kaolin.

The catalytic purification of automobile exhaust gases (CO, NOx and hydrocarbons) is one of the most practiced conversion processes used to lower the emissions and to reduce the air pollution. Nevertheless, the good performance of exhaust gas purification catalysts often requires the high consumption of noble metals such as platinum. Here we report that the Brønsted acid sites on the external s...

This study focuses on co-cations modified copper based molecular sieve catalyst CuCe/SAPO-34. The SCR performance and low temperature hydrothermal stability of Cu/SAPO-34 CuCe/SAPO-34 before after 70 ? aging were evaluated to conclude the impact Ce structure mechanism NH3-SCR reaction. For fresh samples, showed higher catalytic activity at whole range, especially below 250 above 400 in comparis...

In this work, Mordenite zeolite was successfully synthesized with Si/Al ratio of 18 in absence of organic template. The hydrothermal method was applied for synthesis under optimum conditions: 24 h synthesis time, 180°C temperature and 2 days aging time. The obtained zeolite was characterized by X-ray powder diffraction (XRD), Brunauer-Emmett-Teller (BET), X-ray fluorescence (XRF), Fourier Trans...