检索结果-南通市图书馆

Chinese Journal of Chemical Engineering 2024年第3期67卷 257-267页

作者： Feifan Yang Yuanhang Jin Jiangying Liu Haipeng Zhu Rong Xu Fenjuan Xiangli Gongping Liu Wanqin Jin State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology School of Petrochemical EngineeringChangzhou UniversityChangzhou 213164China Shandong Production and Research Long Membrane Technology Development Co. Ltd.Yantai Economic Development ZoneYantai 265505China

For the application of carbon capture by membrane process,it is crucial to develop a highly permeable CO_(2)-selective membrane.In this work,we reported an ultra-thin polyether-block-amide(pebax)mixedmatrix membranes(MMMs)incorporated by graphene oxide(GO),in which the interlayer channels were regulated to optimize the CO_(2)/N_(2) separation performance.Various membrane preparation conditions were systematically investigated on the influence of the membrane structure and separation performance,including the lateral size of GO nanosheets,GO loading,thermal reduction temperature,and time.The results demonstrated that the precisely regulated interlayer channel of GO nanosheets can rapidly provide CO_(2)-selective transport channels due to the synergetic effects of size sieving and preferential adsorption.The GO/pebax ultra-thin MMMs exhibited CO_(2)/N_(2) selectivity of 72 and CO_(2) permeance of 400 GPU(1 GPU=106 cm^(3)(STP)·cm^(2)·s^(-1)·cmHg^(-1)),providing a promising candidate for CO_(2) capture.

关键词： Mixed-matrix membrane Ultra-thin membrane pebax Graphene oxide CO_(2) capture

CO_(2)捕集膜分离的pebax基材料研究进展

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

化学学报 2024年第2期82卷 226-241页

作者：何文王波冯晗俊孔祥如李桃肖睿国能锦界能源有限责任公司榆林719319 东南大学能源热转换及其过程测控教育部重点实验室南京210096

膜分离CO_(2)技术是实现“双碳”目标的关键技术手段之一,而膜材料的性能对膜分离效果具有重要影响.聚醚嵌段聚酰胺(pebax)对CO_(2)具有较高的渗透性和选择性,其自身具有高机械强度和良好的化学稳定性,且价廉易得,是一种极具潜力的聚合... 详细信息

膜分离CO_(2)技术是实现“双碳”目标的关键技术手段之一,而膜材料的性能对膜分离效果具有重要影响.聚醚嵌段聚酰胺(pebax)对CO_(2)具有较高的渗透性和选择性,其自身具有高机械强度和良好的化学稳定性,且价廉易得,是一种极具潜力的聚合物气体分离膜材料.本综述介绍了用于CO_(2)捕集的pebax基膜材料的特征及其气体分离性能的影响因素,重点概述了pebax制备工艺优化、促进传递膜、交联和共混四种pebax超薄复合膜的优化方式,并综述了pebax基混合基质膜及填料功能化的研究进展.针对目前pebax基材料存在渗透性和选择性权衡的问题,对pebax基膜材料未来的优化方向作出了展望.

关键词： pebax 膜分离 CO_(2)捕集薄膜制备混合基质膜

在线全文

学校读者我要写书评

暂无评论

CO捕集膜分离的pebax基材料研究进展

化学学报 2024年

作者：何文王波冯晗俊孔祥如李桃肖睿东南大学能源热转换及其过程测控教育部重点实验室国能锦界能源有限责任公司

膜分离CO2技术是实现“双碳”目标的关键技术手段之一，而膜材料的性能对膜分离效果具有重要影响。聚醚嵌段聚酰胺(pebax)对CO2具有较高的渗透性和选择性，其自身具有高机械强度和良好的化学稳定性，且价廉易得，是一种极具潜力的聚合... 详细信息

膜分离CO2技术是实现“双碳”目标的关键技术手段之一，而膜材料的性能对膜分离效果具有重要影响。聚醚嵌段聚酰胺(pebax)对CO2具有较高的渗透性和选择性，其自身具有高机械强度和良好的化学稳定性，且价廉易得，是一种极具潜力的聚合物气体分离膜材料。本文介绍了用于CO2捕集的pebax基膜材料的特征及其气体分离性能的影响因素，重点概述了pebax制备工艺优化、促进传递膜、交联和共混四种pebax超薄复合膜的优化方式，并综述了pebax基混合基质膜及填料功能化的研究进展。针对目前pebax基材料存在渗透性和选择性权衡的问题，对pebax基膜材料未来的优化方向作出了展望。

关键词： pebax 膜分离 CO 捕集薄膜制备混合基质膜

胺化木质素磺酸钠插层水滑石/pebax混合基质膜的制备及气体分离性能研究

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

化工新型材料 2024年第3期52卷 102-108页

作者：赵烨丘晓琳王杰韩忠强许雍蒋文瀚江苏省先进食品制造设备与技术重点实验室无锡214122 江南大学机械工程学院无锡214122 南通金丝楠膜材料有限公司南通226299

将胺化木质素磺酸钠(AL)通过阴离子交换法插层锌铝水滑石(LDH),得到填料AL-LDH,以聚醚嵌段酰胺共聚物(pebax1657)为分离膜基材,制备具有一定成本优势的高CO_(2)/N2选择性混合基质膜。通过傅里叶红外变换光谱仪、X射线衍射仪进行定性和... 详细信息

将胺化木质素磺酸钠(AL)通过阴离子交换法插层锌铝水滑石(LDH),得到填料AL-LDH,以聚醚嵌段酰胺共聚物(pebax1657)为分离膜基材,制备具有一定成本优势的高CO_(2)/N2选择性混合基质膜。通过傅里叶红外变换光谱仪、X射线衍射仪进行定性和结构表征。采用SEM观察AL-LDH和LDH的微观结构。力学性能测试结果表明,3%AL-LDH/pebax的断裂伸长率和拉伸强度分别达到464.7%和18.7MPa,比纯pebax膜分别提升了66.4%和12.6%。AL-LDH/pebax的CO_(2)渗透率最高可达113.60Barrer,比纯膜提高了131%,比LDH/pebax系列提升了15%,证明AL-LDH能进一步提升混合基质膜的CO_(2)/N_(2)分离和选择性。

关键词： pebax 混合基质膜 CO_(2)/N_(2)选择性水滑石插层胺化木质素磺酸钠

The effect of protic ionic liquids incorporation on CO_(2) separation performance of pebax-based membranes

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2022年第3期35卷 169-176页

作者： Haiyan Jiang Lu Bai Bingbing Yang Shaojuan Zeng Haifeng Dong Xiangping Zhang CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex SystemsBeijing Key Laboratory of Ionic Liquids Clean ProcessInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Future Technology University of Chinese Academy of SciencesBeijing 100049China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516003China

The separation of carbon dioxide(CO_(2))is of great importance for environment protection and gas resource purification.The ionic liquids(ILs)-based gas separation membrane provides a new chance for efficient CO_(2)separation,while high permeability and selectivity of membranes is a great challenge.In this study,the influence of two protic ILs with different anion([TMGH][Im]and[TMGH][PhO])on the CO_(2)separation performance of the prepared ILs/pebax blended membranes were systematically investigated at different temperature.The results showed the CO_(2)permeability exhibits the rising trend for ILs/pebax blended membranes with the increment of IL content.Especially,the[TMGH][Im]with low viscosity and high CO_(2)absorption capacity leads to the blended membranes showing better CO_(2)permeability and ideal CO_(2)selectivity than that of membranes with[TMGH][PhO]at high IL content.Besides,with operating temperature increasing,the gas permeability of 20%(mass)[TMGH][Im]/pebax blended membrane increases due to the decreasing viscosity of IL and the rising chain mobility of polymer.Inversely,the gas selectivity shows decreasing trend because CO_(2)absorption capacity obviously decreased at higher temperature.

关键词： CO_(2) Protic ionic liquids Membranes pebax

Preparation of ZIF-8@pebax/PVDF nanocomposite membrane by the combination of self-assembly and in-situ growth for removing thiophene from the model gasoline

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2023年第12期64卷 177-187页

作者： Zhesai Zhao Qingwen Han Wenwen He Xiaolong Han School of Chemical Engineering Northwest UniversityXi’an 710069China Hubei Three Gorges Laboratory Yichang 443007China School of Chemistry and Life Science Advanced Institute of Materials ScienceChangchun University of TechnologyChangchun 130012China

Metal-organic frameworks(MOFs)have gained attention in the development of MOFs/polymer hybrid membranes for pervaporation.However,the agglomeration of MOFs particles and interfacial defects limit its further application.In this study,we present a novel approach to fabricate a ZIF-8@pebax/PVDF nanocomposite membrane for removing thiophene from the model gasoline by combination of selfassembly and in-situ growth.Firstly,a PVDF supporting membrane was modified to have a negative charge.Next,positively charged zinc ions were attracted onto the negatively charged PVDF supporting membrane through electrostatic interaction.Afterwards,the Zinc ions deposited PVDF membrane was immersed into dimethylimidazole solution to form a uniform ZIF-8 layer.Finally,the ZIF-8 layer was coated with poly(ether-block-amide)(pebax)using the pouring method.Experimental results showed that the separating efficiency of the ZIF-8@pebax/PVDF nanocomposite membrane was improved significantly compared to that of pristine pebax membrane.The optimal permeation flux and enrichment factor of membrane were 27.80 kg(m^(2)h)^(-1)and 6.9,respectively.

关键词： Nanocomposite membrane ZIF-8 nanoparticles pebax Thiophene

Preparation of CO2 selective composite membranes using pebax/CuBTC/PEG-ran-PPG ternary system

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2017年第3期26卷 530-539页

作者： Tayebeh Khosravi Mohammadreza Omidkhah Faculty of Chemical Engineering Tarbiat Modares UniversityP.O.Box 14115-143TehranIran

Three phase pebaxMH 1657/PEG-ran-PPG/CuBTC（polymer/liquid/solid） was successfully deposited as a selective layer on a porous Polysulfone（PSF） support. In fact, the beneficial properties of PEG（high selectivity） with those of PPG（high permeability, amorphous） have been combined with superior properties of mixed matrix membrane（MMMs）. The membranes were characterized by DSC, TGA and SEM, while CuBTC was characterized by COand CHadsorption test. Statistically based experimental design（central composite design, CCD） was applied to analyze and optimize the effect of PEG-ran-PPG（10–50 wt%） and CuBTC（0–20 wt%） mass contents on the COpermeance and CO/CHideal selectivity. Based on the regression coefficients of the obtained models, the COpermeance was notably influenced by PEG-ran-PPG,while CuBTC has the most significant effect on the CO/CHideal selectivity. Under the optimum conditions（PEG-ran-PPG: 32.76 wt% and CuBTC: 20 wt%）, nearly 620% increase in the COpermeance and43% enhancement in the CO/CHideal selectivity was observed compared to the neat pebax. The effect of pressure（3, 9 and 15 bar） on the pure and mixed gas separation performance of the composite membranes was also investigated. The high solubility of COin the membranes resulted in the enhancement of COpermeability with increase in gas pressure.

关键词： CO2 separation pebax Composite membrane CuBTC PEG-ran-PPG

胺化木质素磺酸钠插层水滑石/pebax混合基质膜的制备及气体分离性能研究

在线全文

学校读者我要写书评

暂无评论

化工新型材料 2023年

作者：赵烨丘晓琳王杰韩忠强许雍蒋文瀚江南大学机械工程学院南通金丝楠膜材料有限公司江苏省先进食品制造设备与技术重点实验室

将胺化木质素磺酸钠(AL)通过阴离子交换法插层锌铝水滑石(LDH)，得到填料AL-LDH，以聚醚嵌段酰胺共聚物(pebax1657)为分离膜基材，制备具有一定成本优势的高CO2/N2选择性混合基质膜。通过傅里叶红外变换光谱仪、X射线衍射仪进行定性和... 详细信息

将胺化木质素磺酸钠(AL)通过阴离子交换法插层锌铝水滑石(LDH)，得到填料AL-LDH，以聚醚嵌段酰胺共聚物(pebax1657)为分离膜基材，制备具有一定成本优势的高CO2/N2选择性混合基质膜。通过傅里叶红外变换光谱仪、X射线衍射仪进行定性和结构表征。采用SEM观察AL-LDH和LDH的微观结构。力学性能测试结果表明，3%AL-LDH/pebax的断裂伸长率和拉伸强度分别达到464.7%和18.7MPa，比纯pebax膜分别提升了66.4%和12.6%。AL-LDH/pebax的CO2渗透率最高可达113.60Barrer，比纯膜提高了131%，比LDH/pebax系列提升了15%，证明AL-LDH能进一步提升混合基质膜的CO2/N2分离和选择性。

关键词： pebax 混合基质膜 CO /N 选择性水滑石插层胺化木质素磺酸钠

用于CO分离的pebax基混合基质膜稳定性研究进展

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

化工进展 2023年

作者：耿秀梅张逢张翔单美霞张亚涛郑州大学化工学院

膜技术在二氧化碳捕集和分离过程中以高效、节能、经济等优势成为当前研究的热潮。聚合物膜由于可加工性强，成本低廉等优点已被广泛商业化，但聚合物膜存在渗透性和选择性的“trade-off”效应问题，即高渗透性膜选择性反而低，反之亦... 详细信息

膜技术在二氧化碳捕集和分离过程中以高效、节能、经济等优势成为当前研究的热潮。聚合物膜由于可加工性强，成本低廉等优点已被广泛商业化，但聚合物膜存在渗透性和选择性的“trade-off”效应问题，即高渗透性膜选择性反而低，反之亦然。将多孔材料加入聚合物基质中制备的混合基质膜能够实现气体渗透性和选择性的同时提升，成为气体分离膜领域的研究趋势。本文综述了聚醚嵌段聚酰胺(pebax)为聚合物基质、多孔材料为填料所制备的混合基质膜在二氧化碳分离稳定性方面的研究进展。概述了沸石、金属有机骨架和共价有机骨架三类多孔材料在水、酸、碱和有机溶剂等污染物存在下的化学稳定性并对其机理进行解释。重点介绍了以pebax为基质的混合基质膜在CO2分离过程中抗湿性和长期稳定性的研究现状。最后，针对膜稳定性在气体分离领域的发展，提出了多孔材料和膜在基础研究中的研究重点，指出了理论交叉实验以及多样化手段评估膜稳定性的研究方向。此外，从填料和聚合物的设计制备提出了改善膜稳定性的策略，旨在进一步提升pebax混合基质膜对CO2混合气体的分离稳定性。

关键词： CO 分离多孔材料 pebax 混合基质膜稳定性

pebax/功能化MOF混合基质膜的制备及CO2分离性能的研究

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Pebax/功能化MOF混合基质膜的制备及CO2分离性能的研究

作者：曹珩珩石河子大学

学位级别：硕士

生物天然气(BNG)的是一种绿色清洁可再生资源(主要成分为CH含有少量的CO等杂质气体),而对CO的分离纯化过程是制备生物天然气的关键步骤。气体膜分离技术因环境友好、低成本、低能耗等优点成为最具前景的CO分离技术之一。本文以pebax作... 详细信息

生物天然气(BNG)的是一种绿色清洁可再生资源(主要成分为CH含有少量的CO等杂质气体),而对CO的分离纯化过程是制备生物天然气的关键步骤。气体膜分离技术因环境友好、低成本、低能耗等优点成为最具前景的CO分离技术之一。本文以pebax作为高分子基质,基于MOFs填充剂的功能化设计(包括化学微环境的调节、孔道和结构的调节以及功能化缺陷孔结构的构建),提高CO在混合基质膜(MMMs)内的传递机制,以实现功能化MOF基混合基质膜对CO/CH的高效分离。具体研究内容如下:(1)设计和制备了功能化改性的IL@PEG-g-ZIF-8(简称IL@PZIF)填充剂,并将其掺入pebax基质中制备pebax/IL@PZIF MMMs用于CO/CH分离性能的研究。IL@PZIF中丰富的醚氧基团和高CO容量的[Bmim][TfN]提高了CO在膜中的溶解性,从而提高了CO渗透率。功能化改性后的IL@PZIF仍保留了ZIF-8微孔结构,在膜中为CO提供了额外的扩散通道,从而提高了CO的渗透率和CO/CH选择性。此外,IL@PZIF的引入增大了MMMs中pebax的链间距,提高了CO的渗透性。在混合气体加湿条件下,pebax/IL@PZIF-4 MMM的CO渗透率为325.69±7.39Barrer(较纯膜提高了91.01%),CO/CH选择性为40.26±0.37(较纯膜提高了33%)。(2)设计和制备了具有亲水性的微孔和空心结构的H-ZIF-8,并将其掺入pebax基质中制备pebax/H-ZIF-8 MMMs用于CO/CH分离性能研究。H-ZIF-8表面附着了高亲水性的单宁酸使H-ZIF-8具有较高的亲水性,因此H-ZIF-8可以在膜中形成具有较低阻力的水通道,提高了CO的渗透率。H-ZIF-8保留的微孔结构提高了CO/CH的选择性。H-ZIF-8内部的空心结构为CO提供了低阻力的快速传输通道,从而提高了MMMs的CO的渗透率。在干态混合气下的pebax/H-ZIF-8-5 MMM保证了CO/CH选择性,同时CO渗透率达到239.9±2.0 Barrer,较纯pebax膜提高了124.7%。而湿态下pebax/H-ZIF-8-5 MMM的CO渗透率为412.4±3.7Barrer(较纯膜提高了85.4%),CO/CH选择性为36.3±0.1(较纯膜提高了21.4%)。(3)设计和制备了具有Li功能化缺陷孔的Li-HKUST-1-R(简称Li-HK),并将Li-HK掺入pebax基质制备了pebax/Li-HK MMMs用于CO/CH分离性能研究。由于Li-HK具有层次环状结构可以与pebax链之间相互缠绕,使Li-HK在膜中稳定的分散。Li与CO之间具有较高的亲和力,增大了CO在膜内的溶解性和CO/CH选择性。Li交换产生的额外的介孔孔隙可以为CO提供额外的低阻力传递通道,增大了CO在膜中的扩散性。湿态混合气的条件下pebax/Li-HK-1 MMM的CO渗透率335.44±2.85Barrer(较纯膜提高了68.58%),CO/CH选择性为37.47±0.05(较纯膜提高了16.24%)。

关键词：功能化MOFs pebax 混合基质膜(MMMs) CO2分离