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Direct synthesis of a disinfectant with fresh scent of green plants by semi-hydrogenation of alkynol on Pd single-atom catalysts

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Nano Research 2024年第5期17卷 3872-3878页

作者： Yan Jiang Xuetong Yu Yuxia Ji Xunzhu Jiang Yalin Guo Tianbo Li Liang Gao Rui Lang yanxiong fang Botao Qiao Jinxiang Dong School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory(Rongjiang Laboratory) Jieyang 515200China CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116024China Guangdong Provincial Key Laboratory of Plant Resources Biorefinery Guangzhou 510006China School of Chemical Engineering and Technology China University of Mining and TechnologyXuzhou 221116China

Alcohol-based disinfectants have protected people in the coronavirus disease 2019(COVID-19)pandemic,but olfactory stimuli of ethanol may evoke unpleasant memories associated with stressful situations in the devastating infectious *** smell of ethanol in household cleaning and disinfectant products can be covered up by the fragrance additives,and 3-hexenol is especially appreciated for the characteristic,strong odor of green *** production of 3-hexenol relies on the selective hydrogenation of 3-hexyn-1-ol,where Lindlar catalyst is normally used for the superior *** achieving such catalytic transformation in ethanol solution seems as a direct way to produce a disinfectant with green aroma,a popular consumer product in the post-COVID era,severe leaching of toxic Pb hinders Lindlar catalyst as a promising *** find that the Fe_(2)O_(3) supported Pd single-atom catalyst is highly selective to fulfill semi-hydrogenation of 3-hexyn-1-ol in 75%ethanol,and the aforementioned household product is readily generated after filtrating the stable,solid catalyst out of reaction ***-atom catalysts have been frequently utilized for fine-chemical synthesis,while in this work they make stunning debut in practical manufacture of daily used products.

关键词： single-atom catalysis hydrogenation fragrance household product coronavirus disease 2019(COVID-19)

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Enhanced ortho-selective t–butylation of phenol over sulfonic acid functionalized mesopore MTW zeolites

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中国化学工程学报:英文版 2023年第8期60卷 1-7页

作者： Baoyu Liu Feng Xiong Jianwen Zhang Manna Wang Yi Huang yanxiong fang Jinxiang Dong School of Chemical Engineering and Light Industry Guangdong Provincial Key Laboratory of Plant Resources BiorefineryGuangzhou Key Laboratory of Clean Transportation Energy ChemistryGuangdong University of TechnologyGuangzhou 510006China Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory(Rongjiang Laboratory) Jieyang 515200China School of Engineering Institute for Materials&ProcessesThe University of EdinburghRobert Stevenson RoadEdinburgh EH93FBUnited Kingdom

Novel organo-inorganic hybrid materials(MTW-x-SO_(3)H) have been fabricated by immobilizing 3-mercap topropyltriethoxysilane onto mesopore MTW zeolites, which is treated via a simple oxidation process with hydrogen peroxide as the oxidant to transform sulfhydryl group into sulfonic acid group. The organic sulfhydryl groups are covalently bonded to the external surface of MTW zeolites through the condensation between siloxane arising from organic fragments with silanol groups on the surface of MTW zeolites, the hybrids contain sulfonic acid group within the external surface of MTW zeolites and an opened mesoporous system in the matrix of MTW zeolites, which provide enough accessible Brùnsted acid sites for the alkylation between phenol with tert-butyl alcohol. Through this methodology it's possible to prepare multifunctional materials where the plenty of mesopores are benefit for the introduction of larger numbers of sulfonic acid groups that contributes to activity during reactions, resulting in high activity(>55%) of MTW-4-SO_(3)H and desired selectivity(>56%) of 2-TBP(2-tert-butyl phenol) in the alkylation between phenol with tert-butyl alcohol.

关键词： MTW Zeolites Acidity Catalysis Alkylation

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Lacunary silicotungstic heteropoly salts as high-performance catalysts in oxidation of cyclopentene

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Chinese Journal of Chemical Engineering 2023年第4期56卷 152-159页

作者： Peiyin Chen yanxiong fang Kaihong Xie Yao Chen Yang Liu Hongliang Zuo Weijian Lu Baoyu Liu School of Chemical Engineering and Light Industry Guangdong Provincial Key Laboratory of Plant Resources BiorefineryGuangzhou Key Laboratory of Clean Transportation Energy ChemistryGuangdong University of TechnologyGuangzhou 510006China Jieyang Branch of Chemistry and Chemical Engineering Guangdong Laboratory(Rongjiang Laboratory) Jieyang 515200China Guangdong Xinhuayue Petrochemical Group Stock Company No.18Youcheng 4 RoadMaoming 525000China

The development of polyoxometalates for olefin oxidation is critical to achieving the green chemical process of the C5 fraction further ***-lacunary silicotungstic anions were easily obtained by continuously adjusting the p H instead of the traditional step-by-step method,which exhibited excellent performance in the catalytic oxidation of cyclopentene(CPE)to aldehydes or *** 93.69%CPE conversion and 97.15%total product selectivity(41.38%for glutaraldehyde(GA)and 55.77%for 1,2-cyclopentanediol(1,2-diol)were achieved by using H_(2)O_(2)as the oxidant and acetonitrile as the *** complementary characterization,it was found that the optimized di-lacunary silicotungstic polyoxometalate retained a complete Keggin structure,and exhibited better catalytic activity and stability than the mono-lacunary or saturated silicodecatungstate because it exposed more catalytic active ***,in situ FT-IR spectra was utilized to monitor the reaction process,revealing the formation of the active species W(O_(2))on the di-lacunary silicotungstic polyoxometalate and the intermediate epoxycyclopentane during the catalytic oxidation of cyclopentene.

关键词： Lacunary silicotungstic heteropoly salts Cyclopentene(CPE) Catalytic oxidation Glutaraldehyde(GA) 1,2-Cyclopentanediol(1,2-diol)

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Controlled release and enhanced antibacterial activity of salicylic acid by hydrogen bonding with chitosan

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中国化学工程学报：英文版 2016年第3期24卷 421-426页

作者： Zujin Yang yanxiong fang HongbingJi School of Chemistry and Chemical Engineering The Key Laboratory of Low-carbon Chemistry&Energy Conservation of Guangdong ProvinceSun Yat-sen UniversityGuangzhou 510275China Huizhou Research Institute Huizhou 516216China Faculty of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China

Microcapsules of salicylic acid(SA)with chitosan were prepared by spray drying *** analytical methods were used to characterize the nature of ***-transform infrared spectroscopy(FTIR)confirmed the presence of intermolecular interactions between chitosan and *** size analysis showed that the average size of microcapsules ranged from 2 to 20 μ*** electron microscopy(SEM)studies indicated that the microspheres were spherical and had a relatively smooth *** assay of antibacterial activity for SA and its microcapsules was measured using different bacterial *** was found that the antibacterial activity of SA was improved after the formation of *** in vitro release profile showed that the microcapsules could control SA release from 1 h to 4 *** studies revealed that the release pattern follows Korsmeyer–Peppas *** antibacterial activity of the SA microcapsules was attributed to the synergistic effects of intermolecular hydrogen-bonding interactions N–H?O and O–H?O_C between SA and *** was also confirmed by quantum chemical calculation.

关键词：氢键相互作用抗菌活性水杨酸壳聚糖分子间相互作用傅里叶变换红外光谱傅立叶变换红外光谱扫描电子显微镜

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Inhibition of lithium dendrites and dead lithium by an ionic liquid additive toward safe and stable lithium metal anodes

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Chinese Chemical Letters 2022年第8期33卷 3951-3954页

作者： Shengjie Zhang Bin Cheng yanxiong fang Dai Dang Xin Shen Zhiqiang Li Ming Wu Yun Hong Quanbing Liu Guangzhou Key Laboratory of Clean Transportation Energy Chemistry Guangdong Provincial Key Laboratory of Plant Resources BiorefinerySchool of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 510006China Department of Chemical Engineering Beijing Key Laboratory of Green Chemical Reaction Engineering and TechnologyTsinghua UniversityBeijing 100084China

The uncontrolled growth of lithium dendrites and accumulation of"dead lithium"upon cycling are among the main obstacles that hinder the widespread application of lithium metal ***,an ionic liquid(IL)consisting of 1-methyl-1-propylpiperidinium cation(Pp_(13)^+) and bis(fluorosulfonyl)imide anion(FSI^(-)),was chosen as the additive in propylene carbonate(PC)-based liquid electrolytes to circumvent the shortcoming of lithium metal *** optimal 1%Pp_(13) FSI acts as the role of electrostatic shielding,lithiophobic effect and participating in the formation of solid electrolyte interface(SEI)layer with enhanced *** in-situ optical microscopy records that the addition of IL can effectively inhibit the growth of lithium dendrites and the corrosion of lithium *** study delivers an effective modification to optimize electrolytes for stable lithium metal batteries.

关键词： Ionic liquid Piperidinium Lithium metal anode Solid electrolyte interface Lithium dendrites Dead lithium

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Modification of pillared MFI zeolite nanosheets by nitridation with tailored activity in benzylation of mesitylene and benzyl alcohol

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Chinese Journal of Chemical Engineering 2019年第8期27卷 1981-1987页

作者： Zhipeng Chen Jiajin Huang Qiaowen Mu Huiyong Chen Feng Xu yanxiong fang Baoyu Liu School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China School of Chemical Engineering Northwest UniversityXi'an 710069China School of Environment and Chemical Engineering Foshan UniversityFoshan 528000China

The modification of pillared MFI zeolites was performed by nitridation of silica pillared MFI zeolite nanosheets under NH3 atmosphere with different time. The resultant zeolites were characterized by a complementary combination of X-ray power diffraction(XRD), scanning electron microscopy(SEM),transmission electron microscopy(TEM), pyridine-IR spectroscopy and N2 adsorption–desorption isotherms. The analyses showed that the nitridation didn’t destroy the crystallinity and specific surface area of zeolites, and the acidity of zeolites can be tailored by tuning the time of nitridation, resulting in the different concentration ratios of Br?nsted-to-Lewis(B/L) acid sites. Moreover, the nitrided zeolites exhibited high selectivity to 2-benzyl-1,3,5-trimethylbenzene than parent silica pillared MFI zeolite nanosheets in benzylation of mesitylene with benzyl alcohol. A balance between Br?nsted acid sites and Lewis acid sites can inhibit the self-etherification of benzyl alcohol and enhance the selectivity of alkylated product. These experimental data implied that nitridation was an effective method to modulate the acidity of zeolites and the synergy between Br?nsted acid sites and Lewis acid sites was a decisive factor to determine the selectivity.

关键词： MFI zeolite Pillar Nitridation Benzylation

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Ionic liquid mediated esterification of alcohol with acetic acid

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Frontiers of Chemical Science and Engineering 2009年第2期3卷 211-214页

作者： Beilei ZHOU yanxiong fang Hao GU Saidan ZHANG Baohua HUANG Kun ZHANG Faculty of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510090China

Highly efficient esterification of alcohols with acetic acid by using a Brønsted acidic ionic liquid,i.e.,1-methyl-2-pyrrolidonium hydrogen sulfate([Hnmp]HSO_(4)),as catalyst has been *** turnover numbers(TON)were able to reach up to 11000 and turnover frequency(TOF)was *** catalytic system is suitable for the esterification of long chain aliphatic alcohols,benzyl alcohol and cyclohexanol with good yields of *** procedure of separating the product and catalyst is simple,and the catalyst could be reused.[Hnmp]HSO_(4) had much weaker corrosiveness than H_(2)SO_(4).The corrosive rate of H_(2)SO_(4) was 400 times more than that of[Hnmp]HSO_(4) to stainless steel.

关键词： ionic liquid Brønsted acid esterification catalyst

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农用地土壤重金属污染修复研究

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皮革制作与环保科技 2023年第18期4卷 135-137页

作者：方雁雄广州草木蕃环境科技有限公司广东广州510000

现阶段,我国农用地总面积正在不断减少,在经济建设工作不断取得新成果的背景下,部分地区的农用地资源存在较为明显的重金属污染问题,不仅对正常的农业生产造成干扰,还会对周边生态环境造成恶劣影响。本文以上述内容为基础,针对农用地土... 详细信息

现阶段,我国农用地总面积正在不断减少,在经济建设工作不断取得新成果的背景下,部分地区的农用地资源存在较为明显的重金属污染问题,不仅对正常的农业生产造成干扰,还会对周边生态环境造成恶劣影响。本文以上述内容为基础,针对农用地土壤重金属污染修复展开研究,整理相关经验并提出有针对性的发展建议。希望本研究能够为同领域工作者提供合理的参考。

关键词：农用地污染重金属污染复合修复技术

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新工科建设背景下校外实践教学的协同育人机制探索与实践

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实验室研究与探索 2022年第3期41卷 238-243页

作者：王力纲白秀梅方岩雄广东工业大学教务处广州510006 广东工业大学实验室与设备管理处广州510006

传统的高校校外实践教学模式在人才培养过程中存在各种问题,如合作建设的校外实践教学基地不稳定、师资队伍建设不受重视、教学质量难以保障。这些问题已逐渐影响到人才培养的质量。为了改善传统校企合作校外实践育人机制,在新工科建设... 详细信息

传统的高校校外实践教学模式在人才培养过程中存在各种问题,如合作建设的校外实践教学基地不稳定、师资队伍建设不受重视、教学质量难以保障。这些问题已逐渐影响到人才培养的质量。为了改善传统校企合作校外实践育人机制,在新工科建设背景下,开展了构建“校、企、政、协”校外实践育人机制的探索,并通过广东工业大学材料与能源学院与东莞横沥镇合作共建实践育人基地进行了实践。结果表明,这个机制可以较好地解决传统校外实践育人机制中存在的问题,提高了人才培养质量,为高校在新工科人才培养下探索校外实践育人机制提供新思路。

关键词：新工科校外实践教学校企政协协同育人机制

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Rational design of a new type ionic liquid-based electrolyte for high performance lithium-ion battery

Rational design of a new type ionic liquid-based electrolyte...

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中国化学会第三届中国能源材料化学研讨会

作者： Shengjie Zhang Junhao Li yanxiong fang Quanbing Liu Dai Dang School of Chemical Engineering and Light Industry Guangdong University of Technology

＜正＞Lithium-ion batteries（LIB） are widely used in mobile electronic devices,electric vehicles,and energy storage power stations due to their high working voltage,high specific energy and specific power,low self-di...

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