科 技·TECHNOLOGY62乙醇胺-二甲基亚砜无水溶液吸收-解吸二氧化碳性能文_姚靖1,2 梁怀勇1,2 潘艳艳1,2 周小斌1,21. 桂林理工大学环境科学与工程学院2.广西环境污染控制理论与技术重点实验室摘要：本研究以乙醇胺（MEA）为活性组分，二甲基亚枫（DMSO）为溶剂，配制MEA-DMSO无水吸收剂用于CO2捕集。
研究表明，在40℃下，MEA-DMSO的CO2吸收负荷可达0.71mol·mol-1，该结果比传统MEA水溶液的吸收负荷高24.6%；在120℃下，MEA-DMSO的最大CO2解吸速率和解吸负荷分别为0.23mol·min-1·kg-1和0.38mol·mol-1，远优于MEA水溶液；经历6次循环吸收，MEA-DMSO的CO2负荷仍可保持0.33mol·mol-1。
以上结果说明MEA-DMSO具有良好的CO2吸收-解吸性能，是一种颇具应用潜力的CO2吸收剂。
关键词：CO2捕集；乙醇胺；二甲基亚枫；吸收-解吸性能基金项目：广西自然科学基金项目（2020GXNSFBA297071）、广西科技计划项目（桂科AD18126018）和桂林理工大学科研基金项目（GUTQDJJ2019123）资助。
CO2 Absorption and Desorption Performance of Monoethanolamine-dimethylSulfoxide Nonaqueous SolutionYAO Jing LIANG Huai-yong PAN Yan-yan ZHOU Xiao-bin[ Abstract ] A nonaqeous absorbent comprising of monoethanolamine (MEA) and dimethyl sulfoxide (DMSO) was proposed for CO2 capture in this study. The experimental results showed that the CO2 absorption loading of the MEA-DMSO solution could realize 0.71 mol·mol-1 at 40℃, which was 24.6% higher than that of the conventional MEA aqueous solution. In addition, the MEA-DMSO solution had a high maximum desorption rate (0.23mol·min-1·kg-1) and desorption loading (0.38mol·mol-1) at 120℃, clearly outperforming the MEA aqueous solution. Moreover, the MEA-DMSO solution could be used repeatedly, its CO2 absorption loading was still 0.33mol·mol-1 after six absorption cycles. Therefore, the MEA-DMSO solution may be a promising candidate for CO2 capture due to its superior CO2 absorption-desorption performance.[ Key words ] CO2 capture; monoethanolamine; dimethyl sulfoxide;absorption-desorption performance减缓气候变暖，对CO2实施控制与减排已成为全球共识。
石油炼制与化工PETROLEUM PROCESSING AND PETROCHEMICALS2021年1月第52卷第1期分析与评定离子淌度-飞行时间质谱测定减压蜡油芳香分及胶质中的碱性氮化物窦民娜12,喻昊】，刘为民3,曹青】，陈菲】，余颖龙】，张占全】，王延飞1（1.中国石油石油化工研究院,北京102206；2.中国石油大学（北京）；3.中国石油大庆石化分公司质量检验中心）摘要：采用柱层析法将减压蜡油（VGO）分离为饱和分、芳香分和胶质，然后用电喷雾电离源（ESI）离子淌度-飞行时间质谱（IMS-TOF MS）对其芳香分与胶质中的碱性氮化物进行了表征，对不同来源的VGO中碱性氮化物的结构差异进行了分析。
结果表明：对于不同来源的VGO样品，即使碱性氮化物不饱和程度接近，其芳环的连接方式也存在明显差异；而对于同一样品的芳香分和胶质，则存在碳数相近，但胶质中等效双键数稍低的现象。
以核磁共振波谱仪异核单量子相干试验和加氢脱氮反应评价作为辅证，进一步推测了VGO中碱性氮化物的芳环侧链长度与其脱除难度之间的关联。
将柱层析分离技术与ESI IMS-TOF MS联用，可以解决高蜡含量样品难以溶解的问题，并减弱强极性组分的离子化抑制作用，得到比直接进样更为全面的质谱信息。
关键词：减压蜡油氮化物离子淌度飞行时间质谱柱层析核磁共振波谱近年来，随着油品质量的升级，对成品油中硫、芳烃等化合物的含量要求日益严格，催化加氢成为了减压蜡油（VGO）加工的重要工艺。
由于VGO中的含氮化合物对于催化剂活性位点具有毒害作用，往往还需要用加氢脱氮（HDN）工艺对其进行前处理［14］。
而为了更好地优化HDN工艺的催化剂及工艺条件,需要对VGO中的氮化物，尤其是容易引起催化剂失活的碱性氮化物进行表征。
用气相色谱-质谱联用技术（GC-MS）［6］与溶剂萃取、固相萃取等富集方式结合［79］，可以对石油馏分中的含氮化合物进行表征。
但当氮化物相对分子质量大于300时，仅用GC-MS很难实现准确识别［10］。
第46卷第1期2021年2月Vol.46No.1Feb.2021天然气化工一C1化学与化工NATURAL GAS CHEMICAL INDUSTRY・试验研究・SCUL系列溶剂对硫醇的溶解研究及抗发泡性能优化刘伟，沈俊，罗仕忠(四川大学化学工程学院，四川成都610065)摘要：对于中石化西北油田分公司二号联处理站产出的高含硫天然气，其中硫醇(RSH)含量很高，需研发出高效的吸收溶剂对其进行处理。
通过分子理论和热力学理论研究分析，在N-甲基二乙醇胺(MDEA)水溶液基础上，以环丁砜(SUL)、聚乙二醇二甲醚(NHD)两种强极性非质子物理溶剂和微量杂环化合物为添加组分，设计出了SCUL系列溶剂；使用有机硫专用气相色谱对气相RSH含量进行了检测，探究了不同吸收温度、吸收压力、添加剂比例下SCUL溶剂对RSH的静态溶解效率，并对SCUL溶剂的抗发泡性能进行了实验测定与优化。
结果表明：SCUL1、SCUL2对甲硫醇、乙硫醇的吸收效率均较高，然而由于两种添加剂极性不同，造成二者对RSH吸收效率的差异；在相同实验条件下，两种溶剂中甲硫醇的溶解度均大于乙硫醇，SCUL1溶剂对RSH 的溶解度大于SCUL2溶剂，且随着添加剂用量的增加，RSH的溶解度增大。
抗发泡性能优化实验发现：对于二号联实地净化，DF-4消泡剂可以作为比较优化、适宜的消泡添加剂组分。
关键词：SCUL溶剂；硫醇；MDEA；吸收；消泡剂中图分类号：TE64:TQ028.25文献标志码:A文章编号：1001-9219(2021)01-55-06Dissolution of mercaptan in SCUL solvent and optimization of anti-foaming propertyLIU Wei,SHEN Jun,LUO Shi-zhong(School of Chemical Engineering,Sichuan University,Chengdu610065,Sichuan,China)Abstract:For the high sulfur natural gas from No.2combined processing plant of Sinopec Northwest Oilfield Company,the content of mercaptans(RSH)is very high,so it is necessary to develop an efficient absorption solvent to treat it.Based on N-methyldiethanolamine(MDEA)aqueous solution,SCUL series solvents were designed through molecular theory and thermodynamic theory analysis,with the strong polar aprotic physical solvents of sulfolane(SUL)and polyethylene glycol dimethyl ether(NHD)and trace heterocyclic compounds as additives.The RSH content in the gas phase was detected by a special gas chromatography for organic sulfur.The static dissolution efficiencies of SCUL solvents to RSH at different absorption temperatures,absorption pressures and additive ratios were studied,and the anti-foaming performances of SCUL solvents were experimentally measured and optimized. The results showed that the absorption efficiencies of SCUL1and SCUL2for both methyl mercaptan and ethyl mercaptan were high, while the difference of RSH absorption efficiency was due to the different polarity of the two additives.Under the same experimental conditions,the solubility of methyl mercaptan in the two solvents was higher than that of ethyl mercaptan,and the solubility of SCUL1to RSH was higher than that of SCUL2.Moreover,the solubility of RSH increased with the increase of the additive dosage. The anti-foaming optimization experiments showed that DF-4defoaming agent could be used as a relatively optimized and suitable defoaming additive component for the field purification of natural gas in the No.2combined processing plant.Keywords:SCUL solvent;mercaptan;MDEA;absorption;defoaming agent我国天然气需求量巨大，但目前从井站开采出来的天然气含有较多含硫化合物，硫化物一般分为无机硫化物与有机硫化物两类。
化工进展Chemical Industry and Engineering Progress2022年第41卷第8期过渡金属单原子催化剂活化H 2O 2/PMS/PDS 降解有机污染物的研究进展段毅，邹烨，周书葵，杨柳（南华大学土木工程学院，湖南衡阳421001）摘要：单原子催化剂（SACs ）是一种将金属以原子态负载于载体上的新型材料，具有原子利用率高、催化活性强和易回收等优点，使其在催化降解有机污染物方面备受关注。
本文介绍了SACs 的催化影响因素，总结了SACs 催化降解有机污染物在环境领域中的应用。
此外，着重综述了不同过渡金属（Fe 、Co 、Mn 、Cu 等）单原子催化剂在基于双氧水或过硫酸盐的高级氧化技术中的催化机理，单原子金属（M ）一般与N 键合形成活性位点M —N x ，活化氧化剂生成自由基或单线态氧，高效降解有机污染物。
最后，提出未来SACs 在催化降解有机污染物的研究方向是合成金属负载量高、稳定性高、pH 适用范围更广的SACs ，以及根据SACs 的结构-性能关系和催化机理，对目标污染物设计特定催化剂。
关键词：单原子催化剂；高级氧化；降解；有机污染物；机理中图分类号：TH3文献标志码：A文章编号：1000-6613（2022）08-4147-12Progress in the degradation of organic pollutants by H 2O 2/PMS/PDSactivated by transition metal single-atom catalystsDUAN Yi ，ZOU Ye ，ZHOU Shukui ，YANG Liu(School of Civil Engineering,University of South China,Hengyang 421001,Hunan,China)Abstract:Single-atom catalysts (SACs)are a new type of material that can load metal on the carrier in atomic state.They have the advantages of high atom utilization,strong catalytic activity and easy recovery,so they have attracted much attention in the catalytic degradation of organic pollution.In this work,the influencing factors of SACs were introduced,and the applications of SACs in environmental field for catalytic degradation of organic pollutants are summarized.In addition,the catalytic mechanisms of SACs of different transition metals (Fe,Co,Mn,Cu,etc .)in advanced oxidation technology based on hydrogen peroxide or persulfate are reviewed.Single-atom metal (M)generally bonds with N to form the active site M —N x ,which activates the oxidant to generate radicals or singlet oxygen,and effectively degrades organic pollutants.Finally,the research directions of SACs on the catalytic degradation of organic pollutants are the preparation of SACs of high metal loading,high stability and wide range of pH,and the design of specific catalysts for different target pollutants according to the structure-performance relationship and catalytic mechanisms of SACs.Keywords:single-atom catalysts;advanced oxidation process;degradation;organic pollutant;mechanism综述与专论DOI ：10.16085/j.issn.1000-6613.2021-2140收稿日期：2021-10-18；修改稿日期：2022-01-14。
