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2.125 Aktuelle Fachpublikationen zum Thema temperature

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Laser-activated gold catalysts for liquid-phase growth of cadmium selenide nanowires

06.01.2015 | C. Huang; J. Mao; X. M. Chen; J. Yang; X. W. Du, Chemical Communication, 2015

A laser-activated-catalyst (LAC) technique was developed to grow CdSe nanowires in liquid medium at room temperature. The gold catalysts dispersed in the precursor solution were activated by a pulsed laser so as to decompose the precursor and catalyse the nanowire growth simultaneously. The LAC ...

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Effective synthesis of novel O-acetylated compounds over ZrO2-Al2O3 solid acid

04.01.2015 | Author(s): N. Thimmaraju , S.Z. Mohamed Shamshuddin , S.R. Pratap , K. Shyam Prasad, Arabian Journal of Chemistry, 2015

Publication date: Available online 3 January 2015 Source:Arabian Journal of Chemistry Author(s): N. Thimmaraju , S.Z. Mohamed Shamshuddin , S.R. Pratap , K. Shyam Prasad The solid acids such as Al2O3, ZrO2 and ZrO2-Al2O3 containing different ZrO2 loadings (10-100 mol%) were prepared by ...

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Photocatalytic UV-degradation of 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) in the Presence of Silver Doped Zeolite

04.01.2015 | Author(s): Fatin Samara , Elie Jermani , Sofian M. Kanan, Arabian Journal of Chemistry, 2015

Publication date: Available online 2 January 2015 Source:Arabian Journal of Chemistry Author(s): Fatin Samara , Elie Jermani , Sofian M. Kanan Silver incorporated into the Y zeolite framework was prepared and characterized. Low temperature luminescence analysis indicates the formation of ...

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Fabrication of capping-free Pt/porous RGO hybrids by a repeatable-using reduction material and their application in methanol electrooxidation

04.01.2015 | Author(s): Tao Li , Ren-Jie Xue , Qiong Xue , Zhi-Yong Yang , Dong-Wei Yan , Zhan-Jun Gu, Chemical Physics Letters, 2015

Publication date: 20 January 2015 Source:Chemical Physics Letters, Volume 620 Author(s): Tao Li , Ren-Jie Xue , Qiong Xue , Zhi-Yong Yang , Dong-Wei Yan , Zhan-Jun Gu The uncapped Pt/reduced graphene oxide (RGO) composites are synthesized through reducing GO and Pt precursor ...

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Effect of temperature on the crystallinity, size and fluorescent properties of zirconia-based nanoparticles

04.01.2015 | Author(s): F.J. Pereira , M.T. Díez , A.J. Aller, Materials Chemistry and Physics, 2015

Publication date: 15 February 2015 Source:Materials Chemistry and Physics, Volume 152 Author(s): F.J. Pereira , M.T. Díez , A.J. Aller Zirconia nanomaterials, usually doped with trivalent ions, are widely used in the development of ceramic materials, sorbents, catalyst supports and ...

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Homopolymerization of Ethylene by Palladium Phosphine Sulfonate Catalysts: The Role of Structural and Environmental Factors

31.12.2014 | Elixabete Rezabal; José M. Asua; Jesus M. Ugalde, Organometallics, 2014

Palladium phosphine sulfonate catalysts mediate the homopolymerization of ethylene and copolymerization with polar monomers very efficiently. Due to their great potential, a number of theoretical studies have complemented earlier experimental work in the quest of rationally improving their ...

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TBPB-promoted metal-free synthesis of thiophosphinate/phosphonothioate by direct P–S bond coupling

30.12.2014 | Jichao Wang; Xin Huang; Zhangqin Ni; Sichang Wang; Jun Wu; Yuanjiang Pan, Green Chemistry, 2014

An efficient method for the direct coupling of thiol/thiophenol with H-phosphine oxides or H-phosphinate esters is reported. Without using any metallic catalyst, the direct sulfur–phosphorus bond coupling reaction was promoted using tert-butyl peroxybenzoate in the presence of KI at room ...

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Insight into the Mechanism of Hydrogenation of Amino Acids to Amino Alcohols Catalyzed by a Heterogeneous MoOx‐Modified Rh Catalyst

29.12.2014 | Masazumi Tamura, Riku Tamura, Yasuyuki Takeda, Yoshinao Nakagawa, Keiichi Tomishige, Chemistry - A European Journal, 2014

Abstract Hydrogenation of amino acids to amino alcohols is a promising utilization of natural amino acids. We found that MoOx‐modified Rh/SiO2 (Rh–MoOx/SiO2) is an efficient heterogeneous catalyst for the reaction at low temperature (323 K) and the addition of a small amount of MoOx ...

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Comparison of reduced and sulfided CoMo/γ‐Al2O3 catalyst on hydroprocessing of pretreated bio‐oil in a continuous packed‐bed reactor

29.12.2014 | Divya R. Parapati, Vamshi K. Guda, Venkata K. Penmetsa, Sathish K. Tanneru, Brian Mitchell, Philip H. Steele, Environmental Progress, 2014

Pretreated bio‐oil was hydroprocessed with conventional sulfided CoMo/γ‐Al2O3 catalyst in a continuous packed‐bed reactor. Hydroprocessing experiments were performed at a temperature of 350 to 400°C, 1500 psig hydrogen pressure, using a hydrogen flow rate of 500 mL/min at a liquid hourly space ...

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Synthesis, Characterization, and Reactivity of Lanthanide Amides Incorporating Neutral Pyrrole Ligand. Isolation and Characterization of Active Catalyst for Cyanosilylation of Ketones

26.12.2014 | Fenhua Wang; Yun Wei; Shaowu Wang; Xiancui Zhu; Shuangliu Zhou; Gaosheng Yang; Xiaoxia Gu; Guangchao Zhang; Xiaolong Mu, Organometallics, 2014

A series of lanthanide amido complexes incorporating a neutral pyrrole ligand were synthesized and characterized, and their catalytic activities were studied. Treatment of [(Me3Si)2N]3Ln(μ-Cl)Li(THF)3 with 1 equiv of [(2,5-Me2C4H2N)CH2CH2] 2NH (1) in toluene afforded the corresponding lanthanide ...

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