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2.193 Aktuelle Fachpublikationen zum Thema temperature

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Mesostructured amorphous manganese oxides: facile synthesis and highly durable elimination of low-concentration NO at room temperature in air

26.03.2015 | Yanyan Du; Zile Hua; Weimin Huang; Meiying Wu; Min Wang; Jin Wang; Xiangzhi Cui; Lingxia Zhang; Hangrong Chen; Jianl ..., Chemical Communication, 2015

At a high space velocity of 120 [ ] 000 mL g−1 h−1 and a relative humidity of 50–90%, 98% removal of 10 ppm NO has been achieved for over 237 h and no sign of deactivation was observed with mesostructured amorphous manganese oxides (AMO), due to the prevention of the catalyst active sites from ...

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Delignification of intact biomass and cellulosic co‐product of acid‐catalyzed hydrolysis

21.03.2015 | Majid Soleimani, Lope Tabil, Catherine Niu, AIChE Journal, 2015

Abstract The kinetics of acid‐catalyzed hemicellulose removal and also alkaline delignification of oat hull biomass were investigated. All three operational parameters namely, catalyst concentration (0.10 N to 0.55 N H2SO4), temperature (110ºC to 130ºC), and residence time (up to 150 min) ...

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Nonisothermal curing kinetics of epoxy resin composite utilizing Ga (III) xanthate as a latent catalyst

21.03.2015 | Tarun Chand Vagvala, Gaurav Kapil, Shyam S. Pandey, Yuhei Ogomi, Shuzi Hayase, Journal of Applied Polymer Science, 2015

ABSTRACT Cure kinetics and curing mechanism of epoxy resin composite utilizing gallium (III) xanthate as a latent catalyst was investigated and compared with the commercial latent catalyst UCAT3512T formulation. Nonisothermal differential scanning calorimetric technique at different heating ...

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Nitridation of Silicon Powders Catalyzed by Cobalt Nanoparticles

21.03.2015 | Yajun Gu, Lilin Lu, Haijun Zhang, Yingnan Cao, Faliang Li, Shaowei Zhang, Journal of the American Ceramic Society, 2015

The effect of Co nanoparticles (NPs) on the nitridation of silicon (Si) was studied. Co NPs were deposited homogeneously on the surfaces of Si powders using an in situ reduction method using NaBH4 as a reducing reagent. Si powders impregnated with 0.5–2.0 wt% Co NPs were nitrided in ...

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SBA‐15‐Oxynitrides as a Solid‐Base Catalyst: Effect of Nitridation Temperature on Catalytic Activity

21.03.2015 | Baljeet Singh, Kaustubh R. Mote, C. S. Gopinath, P. K. Madhu, Vivek Polshettiwar, Angewandte Chemie International Edition, 2015

Abstract Solid bases, such as SBA‐15‐oxynitrides, have attracted considerable interest for potential applications as catalysts in important industrial processes. Reported herein is that by simply tuning the temperature of nitridation (ammonolysis), the catalytic activity of these solid bases ...

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SBA‐15‐Oxynitrides as a Solid‐Base Catalyst: Effect of Nitridation Temperature on Catalytic Activity

20.03.2015 | Baljeet Singh, Kaustubh R. Mote, C. S. Gopinath, P. K. Madhu, Vivek Polshettiwar, Angewandte Chemie, 2015

Abstract Solid bases, such as SBA‐15‐oxynitrides, have attracted considerable interest for potential applications as catalysts in important industrial processes. Reported herein is that by simply tuning the temperature of nitridation (ammonolysis), the catalytic activity of these solid bases ...

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Widening Synthesis Bottlenecks: Realization of Ultrafast and Continuous‐Flow Synthesis of High‐Silica Zeolite SSZ‐13 for NOx Removal

20.03.2015 | Zhendong Liu, Toru Wakihara, Kazunori Oshima, Daisuke Nishioka, Yuusuke Hotta, Shanmugam P. Elangovan, Yutaka Yanaba ..., Angewandte Chemie International Edition, 2015

Abstract Characteristics of zeolite formation, such as being kinetically slow and thermodynamically metastable, are the main bottlenecks that obstruct a fast zeolite synthesis. We present an ultrafast route, the first of its kind, to synthesize high‐silica zeolite SSZ‐13 in 10 min, instead of ...

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Widening Synthesis Bottlenecks: Realization of Ultrafast and Continuous‐Flow Synthesis of High‐Silica Zeolite SSZ‐13 for NOx Removal

20.03.2015 | Zhendong Liu, Toru Wakihara, Kazunori Oshima, Daisuke Nishioka, Yuusuke Hotta, Shanmugam P. Elangovan, Yutaka Yanaba ..., Angewandte Chemie, 2015

Abstract Characteristics of zeolite formation, such as being kinetically slow and thermodynamically metastable, are the main bottlenecks that obstruct a fast zeolite synthesis. We present an ultrafast route, the first of its kind, to synthesize high‐silica zeolite SSZ‐13 in 10 min, instead of ...

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ChemInform Abstract: Cu(N‐Heterocyclic Carbene)chloride: An Efficient Catalyst for Multicomponent Click Reaction for the Synthesis of 1,2,3‐Triazoles in Water at Room Temperature.

19.03.2015 | Vishal B. Purohit, Sharad C. Karad, Kirit H. Patel, Dipak K. Raval, ChemInform, 2015

Abstract The catalyst is recyclable and reusable at least 3 times.

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Highly Regio‐ and Stereoselective Hydrosilylation of Internal Thioalkynes under Mild Conditions

17.03.2015 | Shengtao Ding, Li‐Juan Song, Yong Wang, Xinhao Zhang, Lung Wa Chung, Yun‐Dong Wu, Jianwei Sun, Angewandte Chemie International Edition, 2015

Abstract A general and mild hydrosilylation of thioalkynes is described. With the cationic catalyst [Cp*Ru(MeCN)3]+ and the bulky silane (TMSO)3SiH, a range of thioalkynes underwent smooth hydrosilylation at room temperature with excellent α regioselectivity and syn stereoselectivity. DFT ...

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