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Octane compositions in sulfuric acid catalyzed isobutane/butene alkylation products: experimental and

Lina Liang, Youzhi Liu, Weizhou Jiao, Qiaoling Zhang, Chao Zhang

《化学科学与工程前沿（英文）》 2021年 第15卷 第5期   页码 1229-1242 doi: 10.1007/s11705-020-2030-x

摘要： Octanes in alkylation products obtained from industrial alkylation were studied by batch experiments. More than eight octane isomers were identified and quantified by gas chromatography-mass spectrometry. Based on a classic carbenium ion mechanism, the carbocation transition states in concentrated sulfuric acid catalyzed alkylation were investigated using quantum-chemical simulations and predicted the concentration and octane isomerization products including trimethylpentane and dimethylhexane as well as the formation of heavier compounds that resulted from the oligomerization of octane and butene. The agreement between model calculations and experimental data was quite satisfactory. Calculation results indicated that composition and content of trimethylpentanes in the alkylation products were 2,2,4-trimethylpentane>2,3,3-trimethylpentane>2,3,4-trimethylpentane>2,2,3-trimethylpentane whether the 2-butene or -butene acts as olefin. Heavier compounds in the alkylate were primarily formed by the oligomerization of dimethylhexane with 1-butene. Hopefully, the carbocation transition state models developed in this work will be useful for understanding the product distributions of octane in alkylation products.

关键词： sulfuric acid catalyzed alkylation     carbocation reaction     transition state     octane compositions    

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NO conversion by positive streamer discharge—effects of gas compositions and reaction conditions

HE Wei, ZHU Tianle, LI Jing

《环境科学与工程前沿（英文）》 2007年 第1卷 第2期   页码 153-158 doi: 10.1007/s11783-007-0027-z

摘要： The effects of gas compositions and reaction conditions on NO conversion by positive streamer discharge were experimentally investigated by using a link tooth wheel-cylinder reactor. The results showed that NO conversion increased w

关键词： conversion     streamer discharge     wheel-cylinder     positive streamer    

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Predicting the elemental compositions of solid waste using ATR-FTIR and machine learning

《环境科学与工程前沿（英文）》 2023年 第17卷 第10期 doi: 10.1007/s11783-023-1721-1

摘要：

● A method based on ATR-FTIR and ML was developed to predict CHNS contents in waste.

关键词： Elemental composition     Infrared spectroscopy     Machine learning     Moisture interference     Solid waste     Spectral noise    

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Dynamic changes of protein corona compositions on the surface of zinc oxide nanoparticle in cell culture

Vo-Van Giau, Yoon-Hee Park, Kyu-Hwan Shim, Sang-Wook Son, Seong-Soo A. An

《化学科学与工程前沿（英文）》 2019年 第13卷 第1期   页码 90-97 doi: 10.1007/s11705-018-1766-z

摘要：

The potential applications of nanomaterials used in nanomedicine as ingredients in drug delivery systems and in other products continue to expand. When nanomaterials are introduced into physiological environments and driven by energetics, they readily associate proteins forming a protein corona (PC) on their surface. This PC could result in an alteration of the nanomaterial’s surface characteristics, affecting their interaction with cells due to conformational changes in adsorbed protein molecules. However, our current understanding of nanobiological interactions is still very limited. Utilizing a liquid chromatography–mass spectroscopy/mass spectroscopy technology and a Cytoscape plugin (ClueGO) approach, we examined the composition of the PC for a set of zinc oxide nanoparticles (ZnONP) from cell culture media typically and further analyzed the biological interaction of identified proteins, respectively. In total, 36 and 33 common proteins were investigated as being bound to ZnONP at 5 min and 60 min, respectively. These proteins were further analyzed with ClueGO, a Cytoscape plugin, which provided gene ontology and the biological interaction processes of identified proteins. Proteins bound to the surface of nanoparticles that may modify the structure, therefore the function of the adsorbed protein could be consequently affect the complicated biological processes.

关键词： ZnONPs     nanoparticles     protein corona     ClueGO    

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A novel fluid catalytic cracking process for maximizing

Youhao Xu, Shouye Cui

《化学科学与工程前沿（英文）》 2018年 第12卷 第1期   页码 9-23 doi: 10.1007/s11705-017-1696-1

摘要： The maximizing iso-paraffins (MIP) developed by RIPP has improved gasoline quality to meet the demand of motor gasoline specification. A concept that two different reaction zones include cracking zone and conversion zone is proposed as the fundamental of MIP by research on fluid catalytic cracking (FCC) reaction chemistry. Based on the concept, the MIP process is featured by applying a novel sequential two-zone riser in conjunction with proprietary catalyst and engineering technique. The developed MIP process can not only improve gasoline yield or gasoline plus propylene yields but also produce gasoline with a higher content of -paraffins and a lower content of sulfur. A minimum octane number loss is achieved when MIP gasoline is treated by downstream desulfurization technology (RSDS/S Zorb). The combination of MIP and RSDS/S Zorb processes creates a very competitive route, which is different from the technical route used by other developed countries, to upgrade the quality of motor gasoline with the lowest economic costs in China. In just one decade, the processing capacity of MIP units has accounted for about 60% of the domestic total processing capacity of FCC units. The MIP process is gradually becoming a new generation of FCC technology.

关键词： gasoline     iso-paraffins     FCC     desulfurization     octane number    

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Characteristics of plankton Hg bioaccumulations based on a global data set and the implications for aquatic systems with aggravating nutrient imbalance

《环境科学与工程前沿（英文）》 2022年 第16卷 第3期 doi: 10.1007/s11783-021-1471-x

摘要：

• Hg bioaccumulation by phytoplankton varies among aquatic ecosystems.

关键词： Plankton     Hg bioaccumulation     Physiological characteristics     A cross-system analysis     Nutrient compositions     Global data set    

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组分含量对水基热气溶胶灭火剂燃速影响规律的研究

周晓猛,廖光煊,潘仁明

《中国工程科学》 2006年 第8卷 第1期   页码 72-76

摘要：

水基热气溶胶灭火剂是以替代哈龙为目的而研制的新一代灭火剂。通过水基热气溶胶灭火剂在燃烧器中燃烧，产生以水蒸气和惰性气体为主体的气溶胶灭火介质，经冷却后，排放到被保护空间，对火灾实施有效扑救。因此，水基热气溶胶灭火剂在燃烧器中的燃烧速度，对其灭火效率有重要影响。研究了硝酸钾、催化剂（caty1）、水分、淀粉等组分含量对水基热气溶胶灭火剂的平均质量燃速的影响规律。

关键词： 灭火剂     气溶胶     哈龙     替代物     燃烧速度    

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标题 作者 时间 类型 操作

Octane compositions in sulfuric acid catalyzed isobutane/butene alkylation products: experimental and

Lina Liang, Youzhi Liu, Weizhou Jiao, Qiaoling Zhang, Chao Zhang

期刊论文

NO conversion by positive streamer discharge—effects of gas compositions and reaction conditions

HE Wei, ZHU Tianle, LI Jing

期刊论文

Predicting the elemental compositions of solid waste using ATR-FTIR and machine learning

期刊论文

Dynamic changes of protein corona compositions on the surface of zinc oxide nanoparticle in cell culture

Vo-Van Giau, Yoon-Hee Park, Kyu-Hwan Shim, Sang-Wook Son, Seong-Soo A. An

期刊论文

A novel fluid catalytic cracking process for maximizing

Youhao Xu, Shouye Cui

期刊论文

Characteristics of plankton Hg bioaccumulations based on a global data set and the implications for aquatic systems with aggravating nutrient imbalance

期刊论文

组分含量对水基热气溶胶灭火剂燃速影响规律的研究

周晓猛,廖光煊,潘仁明

期刊论文