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at about 60-90 ℃[11]. So, the formation of the P-containing free radical with P=O and -OH needs higher energy, i.e. the reaction between α-olefin and H3PO2 requires higher initiating temperature... below, it is quite slow because the formation speed of free radical is very low. When the reaction occurs at 120-140 ℃, DTBP has moderate rate and this temperature is propitious to the formation of P......
Oxalic Acid Promoted Hydrolysis of Sodium Borohydride for Transition Metal Free Hydrogen Generation彭元亭1,ZENG Hui1,SHI Yu2,XU Jinrong3,谢镭2,陈均4,ZHENG Jie3,LI Xingguo31. Wuhan Institute of Marine Electric Propulsion2. Sunan Institute for Molecular Engineering, Peking University,Changshu Hi-Tech Industrial Development Zone3. Beijing National Laboratory for Molecular Sciences (BNLMS), College......
Oxalic Acid Promoted Hydrolysis of Sodium Borohydride for Transition Metal Free Hydrogen Generation彭元亭1,ZENG Hui1,SHI Yu2,XU Jinrong3,谢镭2,陈均4,ZHENG Jie3,LI Xingguo31. Wuhan Institute of Marine Electric Propulsion2. Sunan Institute for Molecular Engineering, Peking University,Changshu Hi-Tech Industrial Development Zone3. Beijing National Laboratory for Molecular Sciences (BNLMS), College......
J. Cent. South Univ. (2015) 22: 413-420 DOI: 10.1007/s11771-016-3086-0 Free vibration analysis of non-homogeneous orthotropic plates resting on Pasternak elastic foundation by Rayleigh-Ritz method... Berlin Heidelberg 2015 Abstract: Free vibration analysis of non-homogeneous orthotropic plates resting on a Pasternak type of elastic foundation is investigated. A set of admissible orthogonal polynomials......
" name="ChDivSummary">Lead free polycrystailine ceramics(K0.5Na0.5)Nb(1-x)MoxO3(x=0,0.02,0.04,0.06 and 0.08)have been synthesized via solid state reaction method.The formation of single phase perovskite...Mo6+ Modified(K0.5Na0.5)NbO3 Lead Free Ceramics:Structural,Electrical and Optical PropertiesJyoti Rani1,Piyush Kumar Patel1,Nidhi Adhlakha1,Hemant Singh1,K.L.Yadav1,Satya Prakash21. Smart Materials......
of temperature on reaction free energy of reaction when hydrogarnet is reacted with sodium carbonate 图3 温度对含硅产物生成时反应自由能的影响 Fig.3 Effects of temperature on reaction free energy of reaction... of standard free energy of formation of silicate inerals at 298.15K[J]. Amer J Sci, 1975, 275: 805-817. [10]刘桂华, 李小斌, 李永芳, 等. 复杂化合物组成与热力学数据间的线性关系及其初步应用[J]. 科学通报, 2000(13): 1386-1391. LIU Gui-hua, LI Xiao......
of the straight line to be 6.03. Fig. 11 Relationship between 1-(1-x)1/3 and According to the obtained apparent activation energy, reaction orders and A value, the kinetics equation of sodium...Trans. Nonferrous Met. Soc. China 29(2019) 634-640 Leaching kinetics of scheelite concentrate with sodium hydroxide in the presence of phosphate Ting-ting LI, Yan-bai SHEN, Si-kai ZHAO, Yao-yu YIN......
Precipitation Softening and Precipitate Free Zones of V55Ti30Ni15 Alloys During Heat TreatmentPeng Jiang1,Yan-Dong Yu1,Guang-Sheng Song2,Daniel Liang2,Michael Kellam2,Michael Dolan31. School of Materials Science and Engineering, Harbin University of Science and Technology2. CSIRO, Process Science and Engineering,Clayton, VIC 3168, Australia3. CSIRO, Energy Technology, 1 Technology Court......
,稳定性顺序由大到小依次是:C3S2,C2S,CS,C3S,在高于1600 K时,C3S的稳定性逐渐超过CS,最稳定的硅酸钙化合物仍然是C3S2. 图1 硅酸钙生成反应的关系图 Fig. 1 Gibbs free energy for formation reactions of calcium silicate compounds 2.2 C3S2的物相转变行..., and the corresponding apparent activation energy and the pre-exponential factor are 339.67 kJ/mol and 1.31×109 s-1, respectively. The stability of the sintered products in sodium aluminate solution......
