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Research progress on synthesis of zeolites from coal fly ash and environmental applications

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Frontiers of Environmental Science & Engineering 2023年第12期17卷 85-108页

作者： Xingyue Chen Peng Zhang Yang Wang Wei Peng Zhifeng Ren Yihong Li Baoshuai Chu Qiang Zhu College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024China Australia Institute for Innovative Materials University of WollongongWollongongNSW2500Australia

The by-product of coal combustion,coal fly ash(CFA),has become one of the world’s most emitted solid wastes,and bulk utilization while achieving high value-added products is the focus of current *** CFA to prepare zeolite cannot only reduce environmental pressure,but also obtain high value-added products,which has a good market *** this paper,the research progress of hydrothermal synthesis method of CFA zeolites is reviewed in detail and summarized several other synthetic methods of CFA *** review also presents an overview of CFA zeolites application in environmental applications like water treatment,gas adsorption and soil ***,a considerable number of literature data have documented using CFA zeolites for water treatment,whereas research on CFA zeolites application to gas adsorption and soil remediation is still *** addition,the current status of basic research on the industrial production of CFA zeolites is briefly summarized,and the development trend of the synthetic zeolite of CFA is *** the feasibility analysis of the industrial production of CFA zeolite,it is concluded that the only two methods with high feasibility for industrial application are two-step hydrothermal and alkali melting methods,and the industrial production technology still needs to be studied in depth.

关键词： Coal fly ash Zeolite synthetic method Environmental application Industrialization

Nickel-catalyzed enantioselective reductive amination of benzylic ketones in alcohols

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Science China Chemistry 2024年第8期67卷 2566-2570页

作者： Xiuhua Wang Jianrong Steve Zhou State Key Laboratory of Chemical Oncogenomics School of Chemical Biology and BiotechnologyPeking University Shenzhen Graduate SchoolShenzhen 518055China

Asymmetric reductive amination directly converts ketones and amines to alkylamines, which are important motifs in *** report that cationic nickel complexes of chiral diphosphines promote enantioselective reductive amination of benzylic ketones with both arylamines and benzhydrazide. Isopropanol was used as a safe and cheap source of hydrogen instead of formic acid. The reaction can be readily applied to a concise synthesis of diarylethylamines, a class of neuroactive substances.

关键词： transfer hydrogenation nickel catalysis chiral alkylamine reductive amination synthetic method

Developing a highly scalable synthetic strategy for 5-amino-4-nitrobenzo[1,2-c:3,4-c']bis([1,2,5]oxadiazole)1,b-dioxide(CL-18)and investigating the influence of crystal engineering and positional isomerization on its safety and laser ignition performance

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Defence Technology（防务技术） 2024年第11期41卷 13-21页

作者： Lei Yang Zhenqi Zhang Wei Du Jinshan Li Qing Ma Institute of Chemical Materials China Academy of Engineering PhysicsMianyang621900China

5-amino-4-nitrobenzo[1,2-c:3,4-c']bis([1,2,5]oxadiazole)1,6-dioxide(CL-18)exhibits significant potential as an initiating ***,its current synthesis process remains non-scalable due to low yields and safety *** this study,we have developed a simple and safe synthetic route for *** was synthesized from 3,5-dihaloanisole in a four-step reaction with an overall yield exceeding 60%,surpassing all reported yields in the ***,recrystallization of CL-18 was successfully achieved by carefully selecting appropriate solvents and antisolvents to reduce its mechanical ***,when DMF-ethanol was employed as the recrystallization solvent system,satisfactory product yield(>90%)and reduced mechanical sensitivity(IS=15 J;FS=216 N)were ***,CL-18 is derived from the rearrangement of oxygen atoms on i-CL-18 furoxan,and a comparative analysis of their physicochemical properties was *** thermal stability of both compounds is similar,with onset decomposition temperatures recorded at 186 and 182℃***,they exhibit 5 s breaking point temperatures of 236 and 237℃.Additionally,we present novel insights into the positional-isomerization-laser-ignition performance of CL-18 and its isomer i-CL-18 using laser irradiation for the first ***,our findings demonstrate that i-CL-18 exhibits enhanced laser sensitivity,as it can be directly ignited by a 1064 nm wavelength laser,whereas CL-18 lacks this characteristic.

关键词： Initiating explosive synthetic method Crystal engineering Positional isomerization Laser ignition

Ferrite-based composites and morphology-controlled absorbers

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Rare Metals 2022年第9期41卷 2943-2970页

作者： Yu Mu Zhen-Hui Ma Hong-Sheng Liang Li-Min Zhang Hong-Jing Wu MOE Key Laboratory of Material Physics and Chemistry Under Extraordinary School of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi’an710072China Department of Physics Beijing Technology and Business UniversityBeijing100037China

The exploration of lightweight and efficient electromagnetic wave(EMW)absorption materials is a crucial focus topic because the human body and precision instruments are exposed to the increasingly serious electromagnetic ***,as the first type of EMW absorption material,is still the indelible superstar in the EMW absorption field due to its unique double loss mechanism,controllable morphology and high *** review briefly introduces the EMW absorption and attenuation mechanism of ferrite-based composite absorbers,including dielectric loss dominated by charge transfer and polarization relaxation,and magnetic loss consisted of eddy current and ***,we comb the advances in synthesis of ferrite *** particular,this paper summarizes the advantages and defects of pure ferrite as EMW absorption *** the approach to tackling the imbalance of impedance matching and highdensity in ferrite is also reviewed,including ion substitution,design of micro-morphology and doping with dielectric loss materials.

关键词： Electromagnetic wave absorption(EMWA) Ferrite Attenuation mechanism synthetic method Modification

Access to Polycyclic lndol(en)ines via Base-Catalyzed Intramolecular Dearomatizing 3-Alkenylation of Alkynyl Indoles

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Chinese Journal of Chemistry 2021年第8期39卷 2207-2212页

作者： Lin Lu Zuoliang Zheng Yongjie Yang Bo Liu Biaolin Yin Key Laboratory of Functional Molecular Engineering of Guangdong Province School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhouGuangdong 510640China The Second Clinical Medical College and Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine SyndromeGuangzhou University of Chinese MedicineGuangzhouGuangdong 510006China Guangzhou Key Laboratory of Chirality Research on Active Components of Traditional Chinese Medicine GuangzhouGuangdong 510006China

Polycyclic in doli nes and in dole nines were synthesized via base-catalyzed in tramolecular dearomatizi ng 3-alke nylation reacti ons of al-kynyl in doles 1 at room *** base enhan ced the nu cleophilicity of the carb on at the 3-position of the indole moiety,facilitating an exclusive S-exo-dig cyclization reaction with the alkyne to form spiroindolenines2.

关键词： Dearomatization Domino reaction Alkynyl indole synthetic method Cyclization

Molecules for COVID-19 treatment

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Chinese Chemical Letters 2024年第7期35卷 59-65页

作者： Zhigang Zeng Changzhou Liao Lei Yu Hubei Key Laboratory of Radiation Chemistry and Functional Materials School of Nuclear Technology and Chemistry&BiologyHubei University of Science and TechnologyXianning 437100China Hubei Industry Technology Research Institute of Intelligent Health Xianning 437100China School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China

COVID-19 is a major event with worldwide *** the beginning of the epidemic,pharmaceutical chemists have paid attention to the therapeutic effect of a variety of small molecule medicines on COVID-19 infection.A series of organic molecules are designed and found to be effective in the treatment of COVID-19 *** fact,no matter how effective they are,with the development of the COVID-19 epidemic,various small molecule medicines are gradually recognized by *** is equivalent to a good science popularization of pharmaceutical *** review aims to introduce the molecules for COVID-19 treatment on the basis of their chemical structures,synthetic methods as well as their effects.

关键词： COVID-19 Small molecule medicines "Star"drugs Chemical structure synthetic method

Cluster-cracking Reaction, a New method to Synthesize Unsymmetrical Dithiolate Complexes for the Study of Third-Order Nonlinear Optical Properties

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Chinese Journal of Chemistry 2003年第5期21卷 537-543页

作者：卞国庆朱琴玉戴洁王昕杨巍严泽民孙真荣宗像惠前川雅彦 Department of Chemistry Suzhou University Suzhou Jiangsu 215006 ChinaDepartment of Chemistry Suzhou University Suzhou Jiangsu 215006 ChinaDepartment of Chemistry Suzhou University Suzhou Jiangsu 215006 ChinaDepartment of Chemistry Suzhou University Suzhou Jiangsu 215006 ChinaDepartment of Chemistry Suzhou University Suzhou Jiangsu 215006 ChinaDepartment of Chemistry Suzhou University Suzhou Jiangsu 215006 ChinaLaboratory for Quantum Optics Department of Physics East China Normal University Shanghai 200062 ChinaDepartment of Chemistry Kinki University Kowakae Higashi Osaka 577 8502 JapanDepartment of Chemistry Kinki University Kowakae Higashi Osaka 577 8502 Japan

A new cluster-cracking method to synthesize dithiolate metal complexes was reported and four unsymmetric complexes with formula (Me4N)(2)[M(Ln)(SPh)(2)] (M = Cd and Zn, L1 = dmit = 1, 3-dithiole-2-thione-4, 5-dithiolate, L2 = dmid = 1, 3-dithiole-2-one-4, 5-dithiolate, SPh = thiophenolate) (1-4) were characterized by, elemental analysis, ER, UV NMR spectra and so on. The advantages of this method am summarized in two aspects: (1) the preparation is very convenient; (2) the reaction usually completed giving the product with high,purity. The crystal structure of 1 showed that the bond distances of Cd(II) to the sulfur of the thiophenolate group are shorter than those of Cd(II) to the sulfur of dmit, so that the thiophenolate group does not be replaced in the reaction and the mixed ligand complexes are the dominant products. The dmit complexes showed well third-order NLO properties, but not of the dmid complexes, although druid is an analogue to dmit.

关键词： synthetic method dmit complexes dithiolate NLO properties

Synthesis of Pure Silica Zeolites

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Chemical Research in Chinese Universities 2022年第1期38卷 9-17页

作者： MI Zhenrui LU Tingting ZHANG Jia-Nan XU Ruren YAN Wenfu State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012P.R.China Institute of Catalysis for Energy and Environment College of Chemistry and Chemical EngineeringShenyang Normal UniversityShenyang 110034P.R.China College of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001P.R.China

Pure silica zeolite has become an important porous material in the chemical industry due to its excellent stability and hydrophobicity. However, there are still some problems in the synthesis process of pure silica zeolite, such as environmental pollution, complex operation and high cost. How to effectively and environmentally synthesize pure silica zeolite still remains a significant challenge. This review summarizes the pure silica zeolitetype frameworks that have been discovered currently, introduces the progresses achieved in the synthesis of pure silica zeolite and prospects the areas for future exploration in the synthesis and development of pure silica zeolite.

关键词： Pure silica zeolite Framework type synthetic method

Improved Synthesis of 1,3-Diaryl-2-propen-1-one Oxime in the Presence of Anhydrous Sodium Sulfate

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Chinese Journal of Chemistry 2011年第12期29卷 2781-2784页

作者：许晓亚李记太杜超宋亚丽 Key Laboratory of MedicaI Chemistry and Molecular Diagnosis Ministry of Education Key Laboratory of Analytical Science and Technology of Hebei Province Baoding Hebei 071002 China College of Chemistry and Environmental Science Hebei University Baoding Hebei 071002 China College of Pharmaceutical Sciences Hebei University Baoding Hebei 071002 China

Synthesis of 1,3-diaryl-2-propen-1-one oxime via the condensation of 1,3-diaryl-2-propen-1-one with hydroxylamine hydrochloride in the presence of anhydrous sodium sulfate was carried out in refluxing EtOH for 2-4 h in 83%-93% yields. The significant features of the present procedure include higher yield, shorter reaction time, reduced molar ratio of hydroxylamine hydrochloride to substrate, compared to the reported literature method.

关键词： chalcone oxime synthetic method condensation nucleophilic addition