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2005年01月18日

【期刊论文】Process integration of H2O2 generation and the ammoximation of cyclohexanone

米镇涛, Xinhua Liang, Zhentao Mi, Yaquan Wang∗, Li Wang, Xiangwen Zhang, Wei Wu, Enze Min, and Songbao Fu

F Chem Technol Biotechnol 79: 658-662,-0001,():

-1年11月30日

摘要

The possibility of the integration of the processes ofH2O2 generation through isopropanol partial oxidation and ammoximation of cyclohexanone with H2O2 and NH3 TS-1 catalysed was investigated. The ammoximation of cyclohexanone over TS-1 with isopropanol as solvent was first studied. The results show that isopropanol can be used as solvent, and the impurities in the H2O2 solution obtained through isopropanol oxidation with only acetone needing to be separated have no harmful effects on the ammoximation of cyclohexanone, suggesting that the process of H2O2 generation through isopropanol oxidation and the ammoximation of cyclohexanone could be directly integrated.

isopropanol, H2O2, cyclohexanone, ammoximation, oxime, process integration

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2005年01月18日

【期刊论文】STUDY ON DEACTIVATION AND REGENERATION OF Pd/Al2O3 CATALYST IN HYDROGEN PEROXIDE PRODUCTION BY THE ANTHRAQUINONE PROCESS

米镇涛, Qingfa Wang a, Li Wang a, Yaquan Wang b, Fei He b, Zhenhua Li b, and Zhentao Mi a*

Akad,-0001,():

-1年11月30日

摘要

Deactivated palladium catalysts in the hydrogenation of anthraquinone were regenerated with ethanol, nitric acid, hydrogen peroxide, boiling water and steam, respectively. The deactivated and regenerated catalysts were characterized by XPS, ICP, TG, FTIR, TPD, XRD, etc., and studied in the hydrogenation of anthraquinone. The results showed that the main cause of catalyst deactivation is the coverage of the active component by deposits. The treatments by hydrogen peroxide and boiling water can effectively regenerate the deactivated catalysts.Anthraquinone route, palladium catalyst, deactivation, regeneration

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2005年01月18日

【期刊论文】SYNTHESIS OF ACETONE OXIME THROUGH ACETONE AMMOXIMATION OVER TS-1

米镇涛, Xinhua Liang, Zhentao Mi*, Yaquan Wang, Li Wang, and Xiangwen Zhang

Akad,-0001,():

-1年11月30日

摘要

The ammoximation of acetone to acetone oxime with 30wt.% hydrogen peroxide over TS-1 has been studied. The conversion of acetone and the selectivity to acetone oxime can reach 99% and 94%, respectively. The by-products are the corresponding hydrazone, imine and small amounts of unidentified compounds. The influence of various parameters such as solvent, temperature, amounts of catalyst and the NH3 to acetone molar ratio were investigated. Keywords: Acetone oxime, acetone, ammoximation, TS-1, hydrogen peroxide

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2005年01月18日

【期刊论文】Periodic Packing Mode for Trickle-Bed Reactors: Experiments and Modeling*

米镇涛, LIU Guozhu, and MI Zhentao**

Chinese J. Chem. Eng., 12(3)372-378(2004),-0001,():

-1年11月30日

摘要

A periodic packing mode of trickle-bed reactor (TBR) for the gas limited reaction was proposed. Hydrogenation of 2-ethylanthraquinone over Pd/Al2O3 in a laboratory-scale TBR was taken as a test reaction for determining whether the periodic packing mode is advantageous. The effects of operating conditions and packing type on TBR performance were experimentally examined to demonstrate the cause-effect relationships. A mathematic model of TBR considering axial dispersion and fractional wetting was developed to quantitatively illuminate the reason of performance enhancement.

trickle-bed reactor,, periodic packing mode,, modeling,, hydrogenation,, 2-ethylanthraquinone

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2005年01月18日

【期刊论文】铜磷铝分子筛的合成及其对苯液相氧化制苯酚的催化性能

米镇涛, 任永利, 刘国柱, 王莅

催化学报,2004,25(5):357~362,-0001,():

-1年11月30日

摘要

以水热法合成了铜磷铝分子筛(Cu-AIPO4-5),并用XRD,ICP,SEM,FT-IR,NH3-TPD,H2-TPR,ESR和N2吸附脱附等手段对样品进行了表征结果表明,所合成的Cu-AIPO4-5分子筛具有AFI拓扑结构,结晶度高,无结晶态杂质;Cu2+进入到分子筛的骨架结构中,并使其Lewis酸和Brosled酸中心数量增加,弱酸性中心大大增强,强酸性中心消失;样品中的Cu存在多种形式,以骨架Cu物种为主,还存在有骨架外Cuo和双核Cu物种,部分样品具有缺陷结构Cu-AIPO4-5分子筛中存在着骨架Cu和缺陷结构两种可能的活性中心,对苯液相氧化具有良好的催化性能,苯酚选择性可达96%,收率可达6.9%

铜,, 磷铝酸盐,, 分子筛,, 苯,, 过氧化氢,, 液相氧化,, 苯酚

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    天津大学,天津

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