Europium Oxybromide Catalysts for Efficient Bromine Looping in Natural Gas Valorization

ISSN:1433-7851ISSN:1521-3773ISSN:0570-083

A Review on the Synthesis and Applications of Mesostructured Transition Metal Phosphates

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Halogen-Mediated Conversion of Hydrocarbons to Commodities

ISSN:0009-2665ISSN:1520-689

Descriptors for High-Performance Nitrogen-Doped Carbon Catalysts in Acetylene Hydrochlorination

ISSN:2155-543

Preserved in a Shell: High-Performance Graphene-Confined Ruthenium Nanoparticles in Acetylene Hydrochlorination

ISSN:1433-7851ISSN:1521-3773ISSN:0570-083

Structure and phase analysis of one-pot hydrothermally synthesized FePO4-SBA-15 as an extremely stable catalyst for harsh oxy-bromination of methane

FePO4-SBA-15 (OP) was directly synthesized via a one-pot hydrothermal technique, using Fe(NO3)(3) and H3PO4 as the precursors. FePO4/SBA-15 (IMP) was also prepared as a reference, using an impregnation method and commercially available SBA-15 as the support. The yielding samples were employed to catalyze the harsh oxy-bromination of methane (OBM) reaction, showing similar initial catalytic performances. The fresh and spent samples after catalytic reaction were thoroughly characterized by N-2-physisoption, inductively coupled plasma, wide- and small-angle X-ray diffraction, transmission electron microscopy, diffuse reflectance UV-vis spectroscopy, temperature-programmed oxidation, and room temperature Fe-57 Mossbauer spectroscopy. It was found that the FePO4 was in good crystalline in the OP sample while it was in amorphous for the IMP catalyst. Despite this difference, both FePO4 phases in the fresh samples were transformed into Fe-2(PO4)(6) and Fe2P2O7 in the spent ones. Furthermore, the OP catalyst showed excellent stability in a period of 1000 h time-on-stream performance without apparent deposition of cokes. The losses of P and Fe after the catalytic evaluation were only 9.5% and 15.5%, respectively, while the ratio of P/Fe remained close to 1.0. N-2-adsorption and TEM observations confirmed that the mesoporous pores were extremely stable under the harsh reaction ambience, which might play a crucial role in the stability test. (C) 2012 Elsevier B.V. All rights reserved

Glycerol dehydration to acrolein over activated carbon-supported silicotungstic acids

Activated carbon (AC)-supported silicotungstic acid (H-4[SiW12O40] center dot nH(2)O, HSiW) catalysts were employed to produce acrolein from glycerol dehydration. The results indicated that catalysts with 10% HSiW loading exhibited the highest activity and selectivity. The space time yield of acrolein reached 68.5 mmol/(g.h), which is the best result ever reported in the literature. The properties of the catalysts were closely related to the HSiW dispersion and the relative quantities of strong acid sites

Design of single gold atoms on nitrogen-doped carbon for molecular recognition in alkyne semi-hydrogenation

ISSN:1433-7851ISSN:1521-3773ISSN:0570-083

Phase-controlled synthesis of iron phosphates via phosphation of β-FeOOH nanorods

ISSN:1466-803