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44.474 Aktuelle Fachpublikationen zum Thema temperature

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Purification and characterization of an alkaliphilic endo‐xylanase from Streptomyces althioticus LMZM and utilization in pulp industry

26.03.2015 | Ling Luo, Jun Cai, Changgao Wang, Jianguo Lin, Xin Du, Ansheng Zhou, Mengxiong Xiang, Journal of Chemical Technology & Biotechnology, 2015

Abstract BACKGROUND Xylanase is the key enzyme involved in the conversion of lignocelluloses. RESULTS An extracellular xylanase from Streptomyces althioticus LMZM submerged culture medium using corncob was purified and characterized. The enzyme was purified to 12.65 fold through ...


Controllable synthesis of CeO2/g-C3N4 composites and their applications in the environment

26.03.2015 | Xiaojie She; Hui Xu; Hefei Wang; Jiexiang Xia; Yanhua Song; Jia Yan; Yuanguo Xu; Qi Zhang; Daolin Du; Huaming Li, Dalton Transactions, 2015

This research has developed a photocatalytic reactor that includes circulating water, light, and a temperature control system. CeO2/g-C3N4 composites with high photocatalytic activity and stability were synthesized by a simple and facile hydrothermal method. The obtained photocatalysts were ...


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 ...


Room temperature high sensitive H2S gas sensor based on SnO2 multi-tubes arrays bio-templated from insect bristles

26.03.2015 | jun long tian; Rui yang Xue; Wang Zhang; Xiao tian Fang; Qing lei Liu; Yu hua Wang; Zhi jian Zhang; Di Zhang; Feng Pan, Dalton Transactions, 2015

A tin oxide multi-tubes arrays (SMTA) with a parallel effect was fabricated through a simple and promising method that combines chemosynthesis with biomimetic techniques which the biomimetic template derived from the bristles on the wings of the Alpine Black Swallowtail butterfly (Papilio ...


Role of the nanocrystallinity on the chemical ordering of CoxPt100−x nanocrystals synthesized by wet chemistry

26.03.2015 | Farid Kameche; Anh-Tu Ngo; Caroline Salzemann; Marco Cordeiro; Eli Sutter; Christophe Petit, Physical Chemistry Chemical Physics, 2015

CoxPt100−x nanoalloys have been synthesized by two different chemical processes either at high or at low temperature. Their physical properties and the order/disorder phase transition induced by annealing have been investigated depending on the route of synthesis. It is demonstrated that the ...


A pulsed uniform Laval expansion coupled with single photon ionization and mass spectrometric detection for the study of large molecular aggregates

26.03.2015 | Bernhard Schläppi; Jessica H. Litman; Jorge J. Ferreiro; David Stapfer; Ruth Signorell, Physical Chemistry Chemical Physics, 2015

We report on a new instrument that allows for the investigation of weakly-bound molecular aggregates under equilibrium conditions (constant temperature and pressure). The aggregates are formed in a Laval nozzle and probed with time-of-flight mass spectrometry in the uniform postnozzle flow; i.e. ...


Structure-dependent water transport across nanopores of carbon nanotubes: toward selective gating upon temperature regulation

26.03.2015 | Kuiwen Zhao; Huiying Wu, Physical Chemistry Chemical Physics, 2015

Determining water structure in nanopores and its influence on water transport behaviour is of great importance for understanding and regulating the transport across nanopores. Here we report an ultrafast-slow flow transition phenomenon for water transport across nanopores of carbon nanotubes ...


Effect of [n ary product]-[n ary product] Stacking Interactions on the Emission Properties of Novel Cadmium Metal-Organic Frameworks Based on 1,4-bis(4-pyridyl)-2,3-diaza-1,3-butadiene

26.03.2015 | Antonio Jesús Calahorro; Eider San sebastian; Alfonso Salinas-Castillo; José M Seco; Claudio Mendicute-Fierro; Belén ..., CrystEngComm, 2015

Five novel multidimensional cadmium metal-organic frameworks based on the luminescent 1,4-bis(4-pyridyl)-2,3-diaza-1,3-butadiene linker and flexible dicarboxylate ligands have been synthesized by conventional routes. These MOFs show fascinating structures and display, in solid state and room ...


Oxidations with air by ascorbate-driven quinone redox cycling

25.03.2015 | Gastón Silveira-Dorta; Diego M. Monzón; Fernando P. Crisóstomo; Tomás Martín; Víctor S. Martín; Romen Carrillo, Chemical Communication, 2015

Transition metal-free oxidation with air at room temperature has been achieved by simply using ascorbate (vitamin C) and catalytic amounts of menadione (vitamin K3). A combination of the mentioned vitamins transforms atmospheric oxygen into hydrogen peroxide, which is able to oxidize arylboronic ...


Polar and antiferroelectric behaviour of a hybrid crystal – Piperazinium perchlorate

25.03.2015 | Maciej Wojtas; Anna Gągor; Olaf Czupiński; Anna Piecha; Dmitry Isakov; Wojciech Medycki; Ryszard Jakubas, CrystEngComm, 2015

Monoprotonated piperazinium perchlorate, [NH2(CH2)4NH][ClO4], appeared to be a novel room temperature polar material (P1). Its acentric symmetry was confirmed by a single crystal X–ray diffraction, second harmonic generation (SHG) and pyroelectric measurements. Differential scanning calorimetry ...


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