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2008 1

2007 2

2006 1

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AF/PSTM 1

PSTM图像分解 1

PSTM数值模拟 1

PSTM消假像 1

半限定方法 1

生产调度 1

空间划分 1

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Separating method and dynamic processes of Nano-Al13

GAO Baoyu, YUE Qinyan, WANG Xiaona, CHU Yongbao, KONG Chunyan

《环境科学与工程前沿（英文）》 2007年第1卷第3期页码 368-373 doi: 10.1007/s11783-007-0063-8

摘要： In order to investigate the characteristics of pure Nano-Al, Nano-Al was separated and purified from a series of poly-aluminum chloride (PAC) solutions which had the same Al percentage but different total Al concentrations, by using column chromatography, ethanol-acetone resolving and SO/Ba displacement. The Al species yield was characterized by Al-ferron timed complexation spectrophotometry and Al-NMR (nuclear magnetic resonance). The coagulation efficiency of Nano-Al, PAC and AlCl in synthetic water was also investigated by Jar tests. The dynamic process and aggregation state of kaolin suspensions coagulating with Nano-Al, PAC and AlCl were similarly investigated using a photometric dispersion analyzer 2000 (PDA2000). The experimental results indicated that the ethanol-acetone resolving method was simple and could separate the PAC solution at different concentrations, while column chromatography could separate PAC solutions at low concentrations. The SO/Ba displacement method could separate PAC solutions at high concentrations. However, extra inorganic cation and anion could be added in the solution during separation. The coagulation efficiency and dynamic experimental results showed that Nano-Al with high positive-charged species was effective in removing turbidity and color. The dynamic process results showed that Nano-Al also had the best recovery capability after shearing compared with PAC and AlCl because the Nano-Al conformation is more effective in charge neutralization.

关键词： displacement PAC coagulation efficiency poly-aluminum inorganic

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Measurement of activity coefficients at infinite dilution for hydrocarbons in imidazolium-based ionic liquids and QSPR model

ZHU Jiqin, YU Yanmei, CHEN Jian, FEI Weiyang

《化学科学与工程前沿（英文）》 2007年第1卷第2期页码 190-194 doi: 10.1007/s11705-007-0035-3

摘要： The separations of olefin/paraffin, aromatic/aliphatic hydrocarbons or olefin isomers using ionic liquids instead of volatile solvents have interested many researchers. Activity coefficients γ at infinite dilution of a solute in ionic liquid are generally used in the selection of solvents for extraction or extractive distillation. In fact, the measurement of γ by gas-liquid chromatography is a speedy and cost-saving method. Activity coefficients at infinite dilution of hydrocarbon solutes, such as alkanes, hexenes, alkylbenzenes, styrene, in 1-allyl-3-methylimidazolium tetrafluoroborate ([AMIM][BF]) and 1-butyl-3-methyl imidazolium hexafluorophosphate ([BMIM][PF6]), 1-isobutenyl-3-methylimidazolium tetrafluoroborate ([MPMIM][BF]) and [MPMIM][BF]-AgBF have been determined by gas-liquid chromatography using ionic liquids as stationary phase. The measurements were carried out at different temperatures from 298 to 318 K. The separating effects of these ionic liquids for alkanes/hexane, aliphatic hydrocarbons/benzene and hexene isomers have been discussed. The hydrophobic parameter, dipole element, frontier molecular orbital energy gap and hydration energy of these hydrocarbons were calculated with the PM3 semi-empirical quantum chemistry method. The quantitative relations among the computed structure parameters and activity coefficients at infinite dilution were also developed. The experimental activity coefficient data are consistent with the correlated and predicted results using QSPR models.

关键词： cost-saving consistent coefficient measurement separating

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Continuous reaction performances of benzene alkylation with long chain olefins catalyzed by ionic liquid

QIAO Congzhen, LI Chengyue

《化学科学与工程前沿（英文）》 2008年第2卷第1期页码 69-73 doi: 10.1007/s11705-008-0014-3

摘要： Based on a compulsive mixing-reacting-separating-recycling small experimental setup,the continuous reaction performances of benzene alkylation with long chain olefins catalyzed by [BMIM]Cl-AlCl ionic liquid were investigated. Three different situations including normal continuous operation mode (reagent materials), sidetrack feeding from different axial positions along the static mixing reactor (reagent materials) and normal continuous alkylation using industrial paraffin and olefins materials were examined. Even under the relatively hypecritical reaction conditions, the single pass conversion of pure 1-dodecene could reach to nearly 100.0%, and the selectivity of 2-phenyl isomer was higher than 37.7%. Although the positions along the reactor for sidetrack feeding were different, the 100.0% single pass conversion of 1-dodecene was also attained before the outlet of the reactor. The refined industrial olefins as raw material could meet with the requirements of continuous alkylation. The influences of impurities such as di-olefins and non-benzene aromatics on the catalytic activity and stability should be studied further.

关键词： stability different hypecritical compulsive mixing-reacting-separating-recycling non-benzene

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基于变量分离的生产调度空间划分算法

高永超,李歧强,丁然,郭庆强

《中国工程科学》 2006年第8卷第9期页码 61-64

摘要：

静态生产调度大多形成MILP或MINLP模型，由于调度规模大及混合整数规划的组合优化特性，造成调度求解困难。通过对混合整数规划模型空间的分析，提出依据整数变量和连续变量的分离策略进行空间的自然划分，从而将模型的求解转化为多个较小规模连续子空间的寻优。对典型间歇调度模型的分析表明，将空间划分后进行连续寻优的策略较大地降低了实际运算的规模，降低了求解难度，可以提高问题的求解速度和效率。

关键词：生产调度空间划分半限定方法

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AF/PSTM图像分解方法及其数值模拟结果

吴世法,潘石,章健,刘伟,王景芝,黄玉起

《中国工程科学》 2001年第3卷第8期页码 33-36

摘要：

介绍1996年申请的一项发明专利——光纤尖“共振原子力/光子扫描隧道显微镜（AF/PSTM）”图像分解方法。该方法用入射角以光纤尖轴线为π对称的光束照明样品消假像，在AF/PSTM双功能弯光纤尖共振频率条件下，采用等尖至样品平均间距（即等振幅）扫描或等光子隧道信息平均强度扫描两种模式成像，分解样品光学图像和形貌图像。用最简单的PSTM两介质模型推导了近似的图像分解的解析表达式，最后用PSTM四介质模型数值模拟结果说明了该方法是可行的和有效的。

关键词： AF/PSTM PSTM消假像 PSTM图像分解 PSTM数值模拟