Showing papers in "Chinese Journal of Catalysis in 2012"

TL;DR: Sulfonic acid-functionalized silica-coated nano-Fe 3 O 4 particles (Fe 3O 4 @SiO 2 -SO 3 H) have been prepared as a novel heterogeneous acid using a facile process as discussed by the authors.

TL;DR: An industrial perspective on the synthesis and utilization of zeolites and metal organic frameworks (MOFs) for current and future applications is presented in this article, where an industrial perspective is presented.

TL;DR: A microwave assisted solgel method was employed for the preparetion of nano-sized MgO particles using Mg(NO 3 ) 2 ·6H 2 O as precursor and deionized water as solvent as discussed by the authors.

TL;DR: A zeolite imidazolate framework, ZIF-8, was synthesized and characterized by dynamic laser light scattering, X-ray powder diffraction, scanning electron microscopy, transmission electron microscope, thermogravimetric analysis, Fourier transform infrared, atomic absorption spectrophotometry, and nitrogen adsorption measurements as discussed by the authors.

TL;DR: In this paper, a series of graphene-TiO2 composites was fabricated from graphene oxide and titanium n-butoxide (TNB) by an ultrasonic-assisted method, and the structure and composition of the nanocomposites were characterized by Raman spectroscopy, BET surface area measurements, X-ray diffraction, transmission electron microscopy, and ultraviolet-visible absorption spectrum.

TL;DR: In this article, the Ni-based catalysts for the steam reforming of tar derived from biomass pyrolysis are reviewed including the modification with CeO2 (or MnO), trace Pt, and MgO.

TL;DR: In this article, a review focused on transition metal-catalyzed reactions for the synthesis of various carboxylic acid and derivatives from CO2, by the carboxylation of carbon nucleophiles and C-H bonds and reactions of CO2 with unsaturated organic compounds (especially those with a carbon-carbon multiple bond).

TL;DR: In this paper, a transesterification of glycerol with dimethyl carbonate under mild conditions over a series of base zeolites was performed, and it was found that the NaY zeolite exhibited a higher selectivity for GC (100%) than heterogeneous bases (such as CaO and SrO) or homogeneous catalysts ( such as NaOH and K2CO3).

TL;DR: In this paper, a simple and efficient procedure for the preparation of silica-bonded N-propylpiperazine sodium n-propionate (SBPPSP) by the hydrolysis of 3-silica-branched Npropyl piperazine and methyl acrylate in methanol is described.

TL;DR: Mesoporous tungsten trioxide (m-WO3) was prepared using an evaporation-induced self-assembly method and was used as the support of Pt for hydrogenolysis of glycerol to produce 1,3-propanediol.

TL;DR: Amino-functionalized SBA-15 (SBA-Pr-NH2) has been used as a new basic nanocatalyst in the one-pot synthesis of spirooxindole derivatives via the three-component condensation reaction of isatins, activated methylene reagents, and dimedone in an aqueous medium.

TL;DR: In this article, photo-assisted deposition (PAD) and impregnation were used to synthesize nano-sized Ni particles on TiO2-SiO2 catalysts.

TL;DR: In this paper, a series of ternary perovskite type oxides LaNi1-xCuxO3 (x = 0.2, 0.4 and 0.8Cu0.2O3) were synthesized via the sol-gel method in propionic acid.

TL;DR: In this article, the design and synthesis of Cu-SSZ-13 using a novel template of a low-cost copper amine complex (Cu2+ coordinated with tetraethylenepentamine) were reported.

TL;DR: A sulfonated carbon material was shown to be a highly efficient, eco-friendly, and recyclable solid acid catalyst for the Biginelli reaction of β-ketoester, aldehyde, and urea or thiourea under solvent-free conditions as mentioned in this paper.

TL;DR: 1,4-Dihydropyridine and polyhydroquinoline derivatives have been prepared efficiently in a one-pot synthesis via Hantzsch condensation using nanosized titanium dioxide as a heterogeneous catalyst.

TL;DR: SAPO-34 molecular sieves were synthesized using diethylamine (DEA) as a template in this article, and the level of silicon incorporation into the SAPO34 framework decreased in the following order of DEA > SAPO -34 (MOR) > SAP-34 (TEA).

TL;DR: In this paper, a simple, efficient, and environmentally benign protocol for the synthesis of 4 H -chromene derivatives was developed using bio-compatible, neutral, and recoverable mesoporous silica nanoparticles as a catalyst.

TL;DR: In this article, a simple and sensitive electrochemical detection of caffeine using a single-walled carbon nanotubes on carbon-ceramic electrode (SWCNT/CCE) is reported.

TL;DR: In this paper, the effect of the dispersion state and surface properties of supported vanadia on the selective catalytic reduction (SCR) activity of NO over V2O5/TiO2 catalysts was studied by various experimental techniques.

TL;DR: In this article, Ni2P/SiO2 and Ni2O2 catalysts were used for the hydrogenolysis of glycerol, and their structural properties were characterized by N2 sorption, X-ray diffraction, Xray fluorescence, CO chemisorption, H2 temperature-programmed desorption and NH3 temperatureprogrammed de-desorption.

TL;DR: In this article, the nano silica was used as a support for H3PW12O40, which showed excellent activity in some important organic reactions including Biginelli, Hantzsch, Mannich, and Claisen-Schmidt reactions with good reusability.

TL;DR: In this article, a colloidal copper oxide nanoparticles were synthesized by water-in-oil micro-emulsion using CuCl2·H2O and NaOH.

TL;DR: A carbon paste electrode with added multiwall carbon nanotubes chemically modified with N-(3,4-dihydroxyphenethyl)-3,5- dinitrobenzamide was used as the electrochemical sensor for the determination of trace amounts of isoprenaline.

TL;DR: Tetrabutylammonium hexatungstate has been used as an efficient, inexpensive and recyclable green catalyst for the one-pot three-component synthesis of 1,8-dioxodecahydroacridines by the reaction of dimedone with aromatic or aliphatic aldehydes in the presence of a nitrogen source (ammonium acetate or aromatic amines) under neat conditions.

TL;DR: In this article, 1,3,5-Tris(hydrogensulfato) benzene (THSB) was easily prepared by the reaction between phloroglucinol and chlorosulfonic acid in dichloromethane at room temperature.

TL;DR: Partial substitution of La3+ by Sr2+ in LaFeO3 resulted in significant changes in its structure and catalytic activity as discussed by the authors, which greatly promoted the reducibility of the perovskite.

TL;DR: In this article, the Anderson-type heteropolyoxomolybdate (NH4)4Ni(OH)6Mo6O18 was used to impregnation the NiMo/γ-Al2O3 catalyst.

TL;DR: The Ni/ZnO catalysts were characterized by X-ray diffraction (XRD), temperature-programmed reduction (TPR), transmission electron microscopy (TEM), and H2 titration.

TL;DR: In this paper, a MoO3-TiO2 nanocrystalline composite material was prepared by a simple sol-gel method, and the synthesized material was characterized by X-ray diffraction, scanning electron microscopy with an electron dispersion spectroscopy, transmission electron microscope, and Fourier transform infrared spectrograph.