Results 121 to 130 of about 58,934 (163)

氧化钨基复合催化剂上纤维素催化转化制乙二醇反应研究

, 2013
本论文针对催化转化纤维素制备乙二醇反应进行了深入的研究，首次阐明了钨基催化剂上纤维素到乙二醇的催化作用机理，设计并获得了更具工业应用价值的高效、高稳定的复合催化剂体系。 该论文通过对比实验证明了钨基催化剂在反应过程中存在着共同的催化活性中心，为高温、H2气氛下可溶解的HxWO3。探索、证明了钨酸在反应中的温控相转移行为（高温溶解，低温析出）。检测到了重要的反应中间物种乙醇醛，提出了钨基催化剂的催化作用机理和纤维素制备乙二醇的催化反应途径：纤维素水解为多糖以及单糖 ...
邰志军
core  

[Determination of <i>S-</i>enantiomer in linagliptin by supercritical fluid chromatography-ultraviolet detection]. [PDF]

Se Pu
Li WJ, Jin W, Liu Q, Wang J, LE J.
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以三乙醇胺—乙醇为介质的石膏法制取硫酸钾工艺研究

, 1999
本文研究了以三乙醇胺—乙醇为介质的石膏转化法制取硫酸钾工艺的各影响因素，找到了较适用的工艺条件。在该条件下，氯化钾转化率可控制为９０％，其中三乙醇胺作为反应介质 ...
王向荣, 崔金兰
core  

[Comparison of chiral separation performance of （2-hydroxyethyl-<i>β</i>）-cyclodextrin bonded superficially porous and fully porous particle chiral stationary phases in supercritical fluid chromatography and reversed-phase liquid chromatography]. [PDF]

Se Pu
Yang GY, Wu HJ, Zhang HT, Wang HL, Liang QY.   +4 more
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[Preparation of chiral micro-packed high performance liquid chromatography column with small-size silica gel coated with amylose tris（3，5-dimethylphenylcarbamate）]. [PDF]

Se Pu
Zhang CG, Long YX, Liu H, Song YC, Liang YT, Yuan LM.   +5 more
europepmc   +1 more source

[Exploration of antiviral regimens for patients with chronic hepatitis B virus infection in the indeterminate phase]. [PDF]

Zhonghua Gan Zang Bing Za Zhi
Zheng J, Li XW, Long L, Liu X, Yuan S, Wang SP, Cheng LC, Wang X, Long GY.   +8 more
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[Self-designed experiment in instrumental analysis： online solid phase extraction-high performance liquid chromatography- post column derivatization for the determination of trace pesticide residues in vegetables]. [PDF]

Se Pu
Li Y, Liu YT, Huang X, Zhou ZY, Wang ZQ, Wang J, Ding F, Nan J, Tang A.   +8 more
europepmc   +1 more source

Osteogenic effect of poly(lactic-co-glycolic acid) microcapsules with different molecular weights encapsulating bone morphogenetic protein 2. [PDF]

Hua Xi Kou Qiang Yi Xue Za Zhi
Yuan L, Chen C, Ma Y, Liang R.
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[Determination of six whitening ingredients in cosmetics by ultra performance liquid chromatography coupled with photodiode array detector and corona charged aerosol detector]. [PDF]

Se Pu
Li X, Wang Y, Fan F, Zhou W, Chen B, Shi H, Cai G, Liu Y, He Y.   +8 more
europepmc   +1 more source

[Determination of 33 non-steroidal anti-inflammatory drug residues in horse urine by QuEChERS-ultra performance liquid chromatography-tandem mass spectrometry]. [PDF]

Se Pu
Zhang XN, Ma ZC, Liu A, Huang Y, Min XH, Liu M, Xie ZQ, Wei YS.   +7 more
europepmc   +1 more source