检索结果-南通市图书馆

methane adsorption effected by pore structure of overmature continental shale:Lower Cretaceous Shahezi Formation,Xujiaweizi Fault,Songliao Basin

引用

Frontiers of Earth Science 2024年第1期18卷 172-187页

作者： Pengfei ZHANG Shuangfang LU Nengwu ZHOU Zizhi LIN Xiangchun CHANG Junjian ZHANG Guo CHEN Yumao PANG Junjie WANG Hongsheng HUANG Qi ZHI College of Earth Science and Engineering Shandong University of Science and TechnologyQingdao 266590China Sanya Offshore Oil&Gas Research Institute Northeast Petroleum UniversitySanya 572025China School of Geoscience China University of Petroleum(East China)Qingdao 266580China College of Resources and Environment Yangtze UniversityWuhan 430100China

Overmature continental shale is commonly developed,but few studies have given insight into its pore structure and sorption *** techniques,including SEM,helium porosity and permeability,N_(2)/CO_(2)adsorption,MICP,and NMR,were used to detect the pore structure of shale from the Shahezi Formation,Xujiaweizi Fault,Songliao *** excess methane adsorption volumes were measured by the volumetric method and modeled by the Langmuir *** on the findings,the most developed pores are intraparticle pores in clay minerals,followed by the dissolution pores in feldspar,but organic pores are *** selected shales have low helium porosity(mean 1.66%)and ultralow permeability(mean 0.0498×10^(−3)μm^(2)).The pore throats are at the nanoscale,and the pore-throat size distributions are unimodal,with most less than 50 *** studied shales are characterized by the lower specific surface area(SSA)and pore volume(PV)but the larger average pore *** total SSA is contributed by the micro-and mesopores,while the PV is dominated by meso-and *** pore structures are more complex and controlled by multiple factors,such as mineral compositions and diagenesis,but organic matter is not *** maximum absolute adsorption methane volume(VL)is 0.97−3.58 cm^(3)/g(mean 1.90 cm^(3)/g),correlating well with the total SSA,SSA,and pore volume of micropores,which indicates that methane is mainly adsorbed and stored in micropores,followed by mesopores.

关键词： continental shale pore structure methane adsorption Shahezi Formation Songliao Basin

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

methane adsorption AT LOW TEMPERATURE OVER HZSM-5 ZEOLITE AND Mo/HZSM-5

引用

Chinese Journal of Catalysis 1995年第1期 5-6页

作者： Chen. Lai-yuan Lin. Li-wu Xin. Qin Xu. Zhu-sheng Zhang, Tao Ying, Pin-Hang Li, Guo-qiang and Li, Can(Laboratory of Catalysis by Metals and New Materials, Stale Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116C23)

The recent development of methane conversion over HZSM-5 and Mo/NZSM-5 arouses great interest .As these catalysts are strong solid acidin nature,it is thus speculated that the reaction mechanism is different fromthose of OCM and partial oxidation of ***,the study on theinteraction of methane with their surfaces is of importance to the under-standing of the new route of methane conversion.

关键词： methane adsorption HZSM-5 Mo/HZSM-5 IR spectra

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Molecular Simulation of methane adsorption in Different Micro Porous Activated Carbons at Different Temperatures

引用

Journal of Wuhan University of Technology(Materials Science) 2023年第1期38卷 1-11页

作者： Rugarabamu John Rwiza 赵东风 SONG Kunli LI Shi College of Chemical Engineering China University of Petroleum(East China)Qingdao 266580China College of Earth Sciences and Engineering The University of DodomaDodomaTanzania

We employed the previously developed micro porous activated carbon models of different pore sizes ranges of 9-11?,10-12?,and 13-16?that were constructed by molecular simulation method based on a random packing of platelets of carbon sheets,functionalized with oxygen containing groups,to study the adsorption behavior of methane *** studying methane adsorption behavior,we used Grand Canonical Monte Carlo and Molecular Dynamics methods at different temperatures of 273.15,298.15 and303.15 *** isotherms,isosteric heats of adsorption,adsorption energy distributions and porosity changes of the models during adsorption process were analyzed and ***,radial distribution Functions,relative distribution and diffusion coefficients of methane molecules in activated carbon models at different temperatures were *** the analysis,the main results indicated that large micro pores activated carbons were favorable for storing methane at lower temperatures and small micro pores were the most favorable for adsorbing methane molecules at higher ***,the developed model structures showed high capacities to store methane molecule at ambient temperatures and low pressure.

关键词： Molecular simulation activated carbon methane adsorption MD GCMC

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

K_2S-activated carbons developed from coal and their methane adsorption behaviors

引用

Chinese Physics B 2014年第10期23卷 573-580页

作者：冯艳艳杨文储伟 Department of Chemical Engineering Sichuan University

The main purpose of this work is to prepare various activated carbons by K2S activation of coal with size fractions of 60-80 meshes, and investigate the microporosity development and corresponding methane storage capacities. Raw coal is mixed with K2S powder, and then heated at 750 ℃-900 ℃ for 30 min-150 min in N2 atmosphere to produce the adsorbents. The texture and surface morphology are characterized by a N2 adsorption/desorption isotherm at 77 K and scanning electron microscopy （SEM）. The chemical properties of carbons are confirmed by ultimate analysis. The crystal structure and degree of graphitization are tested by X-ray diffraction and Raman spectra. The relationship between sulfur content and the specific surface area of the adsorbents is also determined. K2S activation is helps to bring about better development of pore texture. These adsorbents are microporous materials with textural parameters increasing in a range of specific surface area 72.27 m2/g-657.7 m2/g and micropore volume 0.035 cm3/g-0.334 cm3/g. The ability of activated carbons to adsorb methane is measured at 298 K and at pressures up to 5.0 MPa by a volumetric method. The Langmuir model fits the experimental data well. It is concluded that the high specific surface area and micropore volume of activated carbons do determine methane adsorption capacity. The adsorbents obtained at 800 ℃ for 90 min with K2S/raw coal mass ratios of 1.0 and 1.2 show the highest methane adsorption capacities amounting to 106.98 mg/g and 106.17 mg/g, respectively.

关键词： coal K2S activation microporosity methane adsorption

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Surface Modification of Bituminous Coal and Its Effects on methane adsorption

引用

Chinese Journal of Chemistry 2013年第8期31卷 1102-1108页

作者： Yanyan Feng Wen Yang Daijun Liu[*] Wei Chu[*] Department of Chemical Engineering Sichuan University Chengdug Sichuan 610065 China Email: Daijun Liu (liudj721@***) Wei Chu (chuwei1965scu@***)[*]Department of Chemical Engineering Sichuan University Chengdug Sichuan 610065 China Tel.: 0086-028-8540 3836

This paper studied the role of O-containing groups over the coal surface in methane adsorption. The coal was modified with H2SO4, （NH4）2S208 or H2SO4/（NH4）2S2Os）, respectively, to introduce O-containing functional groups, and characterized by proximate analysis, ultimate analysis, Boehm titration, X-ray photoelectron spectroscopy （XPS） and nitrogen adsorption. The results of ultimate analysis, Boehm titration and XPS indicate that there were increases in terms of both the content of oxygen and the quantities of O-containing groups over the modified coals surface, especially for the carboxyl. Nitrogen adsorption shows that the modified coals possessed higher surface area and pore volume than that of 0-XQ. The methane adsorption data were measured at 298 K at pressures up to 4.0 MPa by the volumetric method and fitted well by Langmuir model. Experimental results implied that O-containing groups and pore structure affected methane adsorption. The adsorption capacities decreased as increasing quantities of O-containing groups.

关键词： modification O-containing groups pore structure methane adsorption

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pore structure characterization and its effect on methane adsorption in shale kerogen

引用

Petroleum Science 2021年第2期18卷 565-578页

作者： Tian-Yu Wang Shou-Ceng Tian Qing-Ling Liu Gen-Sheng Li Mao Sheng Wen-Xi Ren Pan-Pan Zhang State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China Harvard SEAS-CUPB Joint Laboratory on Petroleum Science 29 Oxford StreetCambridgeMA02138USA China National Oil and Gas Exploration and Development Company Ltd Beijing100034China State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu610500China

Pore structure characterization and its effect on methane adsorption on shale kerogen are crucial to understanding the fundamental mechanisms of gas storage,transport,and reserves *** this study,we use 3D scanning confocal microscopy,scanning electron microscopy(SEM),X-ray nano-computed tomography(nano-CT),and low-pressure N2 adsorption analysis to analyze the pore structures of the ***,the adsorption behavior of methane on shales with different pore structures is investigated by molecular *** results show that the SEM image of the shale sample obviously displays four different pore shapes,including slit pore,square pore,triangle pore,and circle *** average coordination number is 4.21 and the distribution of coordination numbers demonstrates that pores in the shale have high *** with the adsorption capacity of methane on triangle pores,the adsorption capacity on slit pore,square pore,and circle pore are reduced by 9.86%,8.55%,and 6.12%,*** increasing pressure,these acute wedges fill in a manner different from the right or obtuse angles in the other *** study offers a quantitative understanding of the effect of pore structure on methane adsorption in the shale and provides better insight into the evaluation of gas storage in geologic shale reservoirs.

关键词： Shale methane adsorption Pore structure Kerogen Molecular simulation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effects of coal molecular structure and pore morphology on methane adsorption and accumulation mechanism

引用

Frontiers of Earth Science 2023年第1期17卷 262-272页

作者： Jingshuo ZHANG Xiaoming NI Ying HAN Junfeng LIN School of Energy Science and Engineering Henan Polytechnic UniversityJiaozuo 454000China

The adsorption,diffusion,and aggregation of methane from coal are often studied based on slit or carbon nanotube models and isothermal adsorption and thermodynamics ***,the pore morphology of the slit model involves a single slit,and the carbon nanotube model does not consider the molecular structure of *** difference of the adsorption capacity of coal to methane was determined without considering the external environmental conditions by the molecular structure and pore morphology of *** study of methane adsorption by coal under single condition cannot reveal its *** view of this,elemental analysis,FTIR spectrum,XPS electron energy spectrum,13C NMR,and isothermal adsorption tests were conducted on the semi-anthracite of Changping mine and the anthracite of Sihe Mine in Shanxi Province,*** grand canonical Monte Carlo(GCMC)and molecular dynamics simulation method was used to establish the coal molecular structure *** comparing the results with the experimental test results,the accuracy and practicability of the molecular structure model are *** on the adsorption potential energy theory and aggregation model,the adsorption force of methane on aromatic ring structure,pyrrole nitrogen structure,aliphatic structure,and oxygen-containing functional group was *** relationship between pore morphology,methane aggregation morphology,and coal molecular structure was *** results show that the adsorption force of coal molecular structure on methane is as follows:aromatic ring structure(1.96 kcal/mol)>pyridine nitrogen(1.41 kcal/mol)>pyrrorole nitrogen(1.05 kcal/mol)>aliphatic structure(0.29 kcal/mol)>oxygen-containing functional group(0.20 kcal/mol).In the long and narrow regular pores of semi-anthracite and anthracite,methane aggregates in clusters at turns and aperture changes,and the adsorption and aggregation positions are mainly determined by the aromatic ring structure,the positions of pyrrole nitrog

关键词： Grand Canonical Monte Carlo pore morphology methane adsorption molecular structure of coal

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Behavior and controlling factors of methane adsorption in Jurassic continental shale,northeastern Sichuan Basin

引用

Energy Geoscience 2023年第1期4卷 83-92页

作者： Qian-wen Li Zhong-bao Liu Fei-Ran Chen Kun Zhang Ling Tang Sinopec Petroleum Exploration and Production Research Institute Beijing102206China Sinopec Southern Company of Exploration ChengduSichuan 610041China School of Geoscience and Technology Southwest Petroleum UniversityChengduSichuan 610059China CNOOC Research Institute Ltd. Beijing100029China

The behavior and controlling factors of natural gas adsorption in the Jurassic continental shale in the northeastern Sichuan Basin are studied based on the organic geochemical features,mineral compositions and pore structure parameters through a series of experiments on samples from the *** show that the total gas content of the shale measured on-site is 0.1-5.3 cm^(3)/g,with an average of 0.7 cm^(3)/*** methane isothermal adsorption curves show a trend of increasing first and then decreasing,indicating an obvious excessive *** shale has a maximum adsorption capacity(V^(L))of 0.44-3.59 cm^(3)/g,with an average of 1.64 cm^(3)/g,lower than that of marine shale in the same *** organic matter content and pore structure characteristics are identified as the two main factors controlling the adsorption capacity of the *** in the shale are the main storage space for gas to be *** to well developed shell laminae and interlayers in the shale,calcite plays a more important role than clay minerals in affecting the adsorption of gas to the *** formation temperature and water content also significantly inhibit the gas adsorption to the *** with marine shale in the basin,the Jurassic continental shale is more heterogeneous and lower in TOC ***,with a more widely developed clayey shale lithofacies and shell limy shale lithofacies as well as relatively less developed organic pores and micropores,the continental shale is inferior to marine shale in terms of gas adsorption capacity.

关键词： methane adsorption Controlling factors Continental shale Jurassic Sichuan basin

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The role of volatiles and coal structural variation in coal methane adsorption

引用

Science Bulletin 2015年第5期60卷 532-540页

作者：孙文晶王宁储伟江成发 Department of Chemical Engineering Sichuan University Guangdong Medical College

We investigated the role of volatiles in the porous structure of coal samples and the corresponding structural deformations that affect the coals＇ methane adsorption capacity. For this study, the volatiles in coal were gradually removed by extraction. Changes in the crystal, textural, and porous structures were identified by means of thermogravimetric analysis, X-ray diffraction, and N2 adsorption/desorption. Changes in the methane adsorption behavior before and after volatile removal were investigated. It was found that changes in methane adsorption could be attributed to volatile-related deformations in the coal＇s porous structure. Microstructural characterizations indicated that the volatiles could be found in two states within the coal, either trapped in the pores, or cross-linked in the network. The former played an important role in constructing the pore spaces and walls within the coal and affected the accessibility of gases. The latter cross-linked state retained the volatiles within the macromolecular coal structural network. This state affected coal-coal interactions, which was a factor that controlled the crystal structure of coal and contributed to the number of porous deformations.

关键词： Coal Volatile components Structural deformations Aggregation state methane adsorption

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Theoretical and Experimental Study on the adsorption and Desorption of methane by Granular Activated Carbon at 25℃

引用

Journal of Natural Gas Chemistry 2007年第4期16卷 415-422页

作者： E.Salehi V.Taghikhani C.Ghotbi E.Nemati Lay A.Shojaei Department of Chemical and Petroleum Engineering Sharif University of Technology TehranIran

A theoretical and experimental study was conducted to accurately determine the amount of adsorption and desorption of methane by various Granular Activated Carbon （GAC） under different physical conditions. To carry out the experiments, the volumetric method was used up to 500 psia at constant temperature of 25℃. In these experiments, adsorption as well as desorption capacities of four different GAC in the adsorption of methane, the major constituent of natural gas, at various equilibrium pressures and a constant temperature were studied. Also, various adsorption isotherm models were used to model the experimental data collected from the experiments. The accuracy of the results obtained from the adsorption isotherm models was compared and the values for the regressed parameters were reported. The results shows that the physical characteristics of activated carbons such as BET surface area, micropore volume, packing density, and pore size distribution play an important role in the amount of methane to be adsorbed and desorbed.

关键词： methane adsorption volumetric method activated carbon two-term TVFM isotherm

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：