Clay Minerals最新文献_第10页

In situ synthesis of zeolites by geopolymerization with NaOH/KOH mixed solution and their potential application for Cd(II) immobilization in paddy soil NaOH/KOH混合溶液原位聚合合成沸石及其在水稻土中固定化Cd(II)的应用前景

IF 1.5 4区地球科学

Clay Minerals Pub Date : 2021-06-01 DOI: 10.1180/clm.2021.29

Di Wu, Yi Huang, Guqing Xiao, Xuan Li, Xia Yao, Zixuan Deng, Rui Tan

引用次数: 1

Analysis of the chemical composition and phase structure of ‘Ru-type ware’ bodies under the influence of firing temperature 烧成温度对“如”体化学成分和相结构影响的分析

IF 1.5 4区地球科学

Clay Minerals Pub Date : 2021-06-01 DOI: 10.1180/clm.2021.24

Bo Wu, Weijuan Zhao

{"title":"Analysis of the chemical composition and phase structure of ‘Ru-type ware’ bodies under the influence of firing temperature","authors":"Bo Wu, Weijuan Zhao","doi":"10.1180/clm.2021.24","DOIUrl":"https://doi.org/10.1180/clm.2021.24","url":null,"abstract":"Abstract The Qingliang Temple kiln located in Baofeng County, Henan Province, China, is the discovery site of Ru Kuan porcelain, which is one of the five famous porcelain types of the Song dynasty in China. The ‘Ru-type ware’ and unglazed firing bodies were unearthed from the Qingliang Temple kiln in 2014, and the excavation site was very close to the central firing area of Ru Kuan porcelain. In this paper, the chemical composition, firing temperature and phase structure of the Ru-type ware and unglazed firing bodies from the Qingliang Temple kiln were analysed systematically using energy-dispersive X-ray fluorescence spectrometry, high-temperature thermal expansion and X-ray diffraction. The raw-material sources of the Ru-type ware bodies with various glaze colours are consistent but differ significantly from those of the unglazed firing bodies. The firing temperatures of the Ru-type ware and unglazed firing bodies are 1150–1200°C and 950°C, respectively, which are considered underfired. Mullite, α-quartz, β-cristobalite and α-Fe2O3 are the main constituents of the Ru-type ware bodies, whereas α-quartz and anatase were identified in the unglazed firing bodies. The Ru-type ware is related to the Ru Kuan ware in terms of firing techniques and official use.","PeriodicalId":10311,"journal":{"name":"Clay Minerals","volume":"26 26","pages":"108 - 116"},"PeriodicalIF":1.5,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41307043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Adsorption of cetyltrimethyl ammonium bromide surfactant for organophilization of palygorskite clay 十六烷基三甲基溴化铵表面活性剂对坡缕石粘土的吸附

IF 1.5 4区地球科学

Clay Minerals Pub Date : 2021-06-01 DOI: 10.1180/clm.2021.27

R. P. Silva, Alisson G B Góis, Michele O. Ramme, T. N. C. Castro Dantas, J. L. Barillas, V. C. Santanna

引用次数: 4

Enhanced thermal stability and adsorption performance of MIL-53(Fe)@montmorillonite 增强了MIL-53(Fe)@蒙脱土的热稳定性和吸附性能

IF 1.5 4区地球科学

Clay Minerals Pub Date : 2021-06-01 DOI: 10.1180/clm.2021.23

Fenglin Dai, Junhui Guo, Yufeng He, Pengfei Song, Rongmin Wang

{"title":"Enhanced thermal stability and adsorption performance of MIL-53(Fe)@montmorillonite","authors":"Fenglin Dai, Junhui Guo, Yufeng He, Pengfei Song, Rongmin Wang","doi":"10.1180/clm.2021.23","DOIUrl":"https://doi.org/10.1180/clm.2021.23","url":null,"abstract":"Abstract Montmorillonite (Mnt), a clay mineral with a nanolayered structure, was combined with an Fe-based metal–organic framework (MOF; MIL-53(Fe)) using an in situ growth technique that yielded a novel eco-friendly clay-based adsorbent (MIL-53(Fe)@Mnt). The adsorbent was characterized by scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis and N2 gas adsorption. The MIL-53(Fe) particles grew on the surface of the nanolayered Mnt and the MIL-53(Fe) particle size became smaller. The adsorption performance of MIL-53(Fe)@Mnt was investigated by removing methylene blue (MB), and optimization experiments were carried out to study the effects of contact time, pH, initial dye concentration and adsorbent mass on the adsorption processes. The MIL-53(Fe)@Mnt exhibited excellent adsorption capacity for MB, namely 313.7 mg g−1, which was 3.02 times and 3.54 times greater than that of pure Mnt and MIL-53(Fe), respectively. Adsorption was fitted with the Langmuir isotherm model and followed a pseudo-second order kinetic model. The MIL-53(Fe)@Mnt obtained is a low-cost and eco-friendly adsorbing material and might be a candidate for removing dyes during water treatment.","PeriodicalId":10311,"journal":{"name":"Clay Minerals","volume":"56 1","pages":"99 - 107"},"PeriodicalIF":1.5,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45195876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

CLM volume 56 issue 2 Cover and Back matter CLM第56卷第2期封面和封底

IF 1.5 4区地球科学

Clay Minerals Pub Date : 2021-06-01 DOI: 10.1180/clm.2021.34

引用次数: 0

Kaolinite-armoured polyurea microcapsules fabricated on Pickering emulsion: controllable encapsulation and release performance of a lipophilic compound — ERRATUM 皮克林乳液制备的高岭石包覆聚脲微胶囊:一种亲脂化合物的可控包封和释放性能

IF 1.5 4区地球科学

Clay Minerals Pub Date : 2021-06-01 DOI: 10.1180/clm.2021.21

Cunjun Li, Minghao Wang, Zhaoliang Liu, Yanqi Xu, Chunhui Zhou, Linjiang Wang

引用次数: 0

Investigation of unexplored kaolin occurrences in southern Mauritania and preliminary assessment of possible applications 毛里塔尼亚南部未勘探高岭土矿点的调查和可能应用的初步评估

IF 1.5 4区地球科学

Clay Minerals Pub Date : 2021-06-01 DOI: 10.1180/clm.2021.26

D. Küster, S. Kaufhold, Emanetoullah Limam, Omar Jatlaoui, Oumar Ba, Abdellahi Maham Zein Mohamed, M. Pohlmann-Lortz, M. Ranneberg, K. Ufer

{"title":"Investigation of unexplored kaolin occurrences in southern Mauritania and preliminary assessment of possible applications","authors":"D. Küster, S. Kaufhold, Emanetoullah Limam, Omar Jatlaoui, Oumar Ba, Abdellahi Maham Zein Mohamed, M. Pohlmann-Lortz, M. Ranneberg, K. Ufer","doi":"10.1180/clm.2021.26","DOIUrl":"https://doi.org/10.1180/clm.2021.26","url":null,"abstract":"Abstract Non-metallic raw materials are largely unexplored in many African countries. In an attempt to reduce this knowledge gap, kaolin occurrences in three promising regions of southern Mauritania were examined. The aim of the paper is to describe the occurrences and characterize the material in terms of mineralogy and potential technical use in the ceramics industry. The kaolins are geologically associated with various sedimentary rock units in either the Coastal Basin (Kaédi), the Mauritanide Belt (Hassi Abyad) or the Taoudeni Basin (Néma). Geochemical data show Al2O3 contents of between 9% and 38% (corresponding to 23–96% kaolinite). Samples from the Hassi Abyad and Kaédi regions have greater kaolinite contents on average and were further investigated mineralogically. The kaolin from the Néma region contained less kaolinite (<50 mass%). The region is also less accessible and hence is not considered further in this study. X-ray diffraction, X-ray fluorescence and infrared spectroscopy confirmed the geochemically calculated kaolinite contents of the kaolins and identified quartz, anatase and goethite as the remaining major mineral constituents. The degree of structural disorder of the kaolinites (determined by infrared spectroscopy) is generally greater in the Kaédi occurrences than at Hassi Abyad. Ceramic tests proved that all of these kaolin raw materials might be used for the production of ceramics, and some may even be used for fine ceramics. From an economic point of view, the Hassi Abyad deposit is interesting in terms of its quality and reserves, aspects that will be addressed in detail in a follow-up study.","PeriodicalId":10311,"journal":{"name":"Clay Minerals","volume":"56 1","pages":"126 - 139"},"PeriodicalIF":1.5,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45647277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Synthesis and optimization of a montmorillonite-tolerant zwitterionic polycarboxylate superplasticizer via Box-Behnken design Box-Behnken设计合成耐蒙脱石两性离子聚羧酸酯高效减水剂及优化研究

IF 1.5 4区地球科学

Clay Minerals Pub Date : 2021-06-01 DOI: 10.1180/clm.2021.25

Jun Ren, Shuqiong Luo, S. Shi, H. Tan, Xianfeng Wang, Min Liu, Xiang-guo Li

引用次数: 4

Characterization of Brazilian palygorskite (Guadalupe region) and adsorptive behaviour for solvatochromic dyes 巴西斜长石(瓜达卢佩地区)的表征及其对溶剂变色染料的吸附行为

IF 1.5 4区地球科学

Clay Minerals Pub Date : 2021-04-28 DOI: 10.1180/CLM.2021.16

C. D. de Souza, Tammy Caroline Lima de Jesus, Rafael C. dos Santos, Lívia Melo Bomfim, L. Bertolino, Débora F. de Andrade, L. A. d´Avila, L. Spinelli

{"title":"Characterization of Brazilian palygorskite (Guadalupe region) and adsorptive behaviour for solvatochromic dyes","authors":"C. D. de Souza, Tammy Caroline Lima de Jesus, Rafael C. dos Santos, Lívia Melo Bomfim, L. Bertolino, Débora F. de Andrade, L. A. d´Avila, L. Spinelli","doi":"10.1180/CLM.2021.16","DOIUrl":"https://doi.org/10.1180/CLM.2021.16","url":null,"abstract":"This work presents the results of the physical characterization of palygorskite and its adsorptive behaviour for three solvatochromic dyes (Nile blue chloride (NBC), methylene blue (MTB) and dithizone (DTZ)). Adsorption isotherms were used to determine the maximum adsorption of the solvatochromic dyes on the palygorskite. The characterization of palygorskite was carried out via mineralogical and chemical analysis with X-ray diffraction, X-ray fluorescence, scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy, surface-charge measurement (ζ-potential), thermogravimetric analysis, textural analysis and cation-exchange capacity analysis. The material consists of palygorskite and quartz and its chemistry is dominated by SiO2, MgO and Fe2O3. The specific surface area and cation-exchange capacity of the palygorskite are 142 m2 g–1 and 41 cmol(+) kg–1, respectively. The SEM and TEM analyses showed a fibrous structure with fibres 20–100 nm long. The thermogravimetric analysis showed three endothermic events at 57.3°C, 171.8°C and 439.6°C. The adsorption capacities of the palygorskite for NBC (basic pH), MTB (basic pH) and DTZ (neutral pH) were 0.082, 0.013 and 0.102 g g–1, respectively. The adsorptions of NBC and MTB were fitted with the Langmuir isotherm model and the adsorption of DTZ was fitted with the Sips model.","PeriodicalId":10311,"journal":{"name":"Clay Minerals","volume":"1 1","pages":"1-33"},"PeriodicalIF":1.5,"publicationDate":"2021-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47480274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Peter Komadel, 1955–2021 彼得·科马德尔，1955–2021

IF 1.5 4区地球科学

Clay Minerals Pub Date : 2021-04-20 DOI: 10.1180/CLM.2021.11

J. Stucki, J. Madejová

引用次数: 0