15.05.2013 | Keiichi Tomishige; Masazumi Tamura; Kensuke Tokonami; Yoshinao Nakagawa, Chemical Communication, 2013

Ir-ReOx/SiO2 acted as a highly active and selective heterogeneous catalyst for the hydrogenation of unsaturated aldehydes to unsaturated alcohols in water at low H2 pressure (0.8 MPa) and low temperature (303 K). The catalysis is derived from synergy between Ir metal and ReOx.

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09.05.2013 | Richa Tungal; Rajesh Shende, Energy & Fuels, 2013

This paper reports subcritical aqueous phase re-forming of wastepaper in presence of homogeneous Ni(NO3)2 catalyst for biocrude and H2 production. Reforming of aqueous wastepaper slurry (15 g/150 mL) was performed using 5 wt % catalyst in high-temperature high-pressure 300 mL SS316 PARR ...

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08.05.2013 | Zulamita Zapata-Benabithe; Francisco Carrasco-Marín; Juan de Vicente; Carlos Moreno-Castilla, Langmuir, 2013

Carbon xerogels in the form of microspheres and monoliths were obtained from the sol–gel polymerization of resorcinol and formaldehyde in the presence of potassium carbonate as catalyst, using water as solvent and two different molar dilution ratios. The objectives of this study were as ...

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03.05.2013 | Min Lu; Zuhong Xiong; Pengmei Lu; Zhenhong Yuan; Genyu Fan; Yong Chen, Energy & Fuels, 2013

Five cordierite-supported monolithic catalysts with different additives were prepared by vacuum wetness impregnation. All catalysts were characterized by X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), temperature-programmed reduction (TPR), and Raman spectroscopy. These catalysts were ...

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01.05.2013 | Z.L. Cai; Gang Wang; Song Bo; R. Wu; J. Li; Jikang Jian, CrystEngComm, 2013

Single-crystal SiC nanowires with controlled surface amorphous silicon oxide (SiOx) layers, including bare SiC nanowires, chain-like and cable-like SiC/SiOx nanowires, have been synthesized by a catalyst-assisted chemical vapor reaction approach, and the temperature-dependent morphology ...

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01.05.2013 | Doostmohammadi, Razieh; Hazeri, Nourallah, Letters in Organic Chemistry, 2013

Abstract: 3,4,5-substituted furan-2(5H)-ones were One-Pot Multi-Component synthesized by the reaction of aldehydes, amines and dialkyl acetylenedicarboxylates using silica gel-supported polyphosphoric acid (PPA/SiO2) at room temperature. This reaction provides a convenient and ...

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01.05.2013 | G. García; A. Monzón; F. Bimbela; J. L. Sánchez; J. Ábrego, Energy & Fuels, 2013

Energy recovery from digested sewage sludge can be achieved by means of co-gasification with coal in a fluidized-bed system. In this regard, one of the main hurdles in developing a feasible process is the need for gas cleaning, with special emphasis on desulfurization and minimization of the ...

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01.05.2013 | Thomas W. Hansen; Andrew T. DeLaRiva; Sivakumar R. Challa; Abhaya K. Datye, Accounts of Chemical Research, 2013

Metal nanoparticles contain the active sites in heterogeneous catalysts, which are important for many industrial applications including the production of clean fuels, chemicals and pharmaceuticals, and the cleanup of exhaust from automobiles and stationary power plants. Sintering, or thermal ...

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30.04.2013 | Noureddine Khiar, Victoria Valdivia, Álvaro Salvador, Ahmed Chelouan, Ana Alcudia, Inmaculada Fernández, Advanced Synthesis & Catalysis, 2013

Abstract Performing catalytic enantioselective reactions, especially enantioselective carbon‐carbon bond forming reactions, in water without using any organic solvents is one of the important goals in modern asymmetric synthesis. Herein, we report an efficient enantioselective micellar ...

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30.04.2013 | Jakub A. Koza; Caleb M. Hull; Ying-Chau Liu; Jay A. Switzer, Chemistry of Materials, 2013

Films of β-Co(OH)2 with a dense microcone morphology are electrodeposited at room temperature by reducing tris(ethylenediamine)cobalt(III) in alkaline solution. The synthesis exploits the fact that the kinetically inert Co(III) complex of ethylenediamine (en) is 35 orders of magnitude more ...

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