Results 71 to 80 of about 32,662 (288)

Swelling of TMA(tetramethylammonium)- and HDP(hexadecylpyridinium)-montmorillonites in water and toluene media: influence of the type montmorillonites

Materials Research, 2000
Organo-clays were prepared by exchange cations of the montmorillonite with tetramethylammonium (TMA)- and hexadecylpyridinium (HDP)-chloride. Two different montmorillonite types were studied.
C. Volzone, J.O. Rinaldi, J. Ortiga
doaj   +1 more source

Calcium-Facilitated Aggregation and Precipitation of the Uranyl Peroxide Nanocluster U₆₀ in the Presence of Na-Montmorillonite

, 2019
The unique and diverse features of uranyl peroxide nanoclusters may contribute to the enhanced mobility of uranium in the environment. This study examines the sorption of the uranyl peroxide nanocluster [UO2(O2)­(OH)]6060‑ (U60) to Na-montmorillonite ...
Meena Said (6570065), Amy E. Hixon, Meena Said, Amy E. Hixon (1762039), Luke R. Sadergaski, Luke R. Sadergaski (4875415)   +5 more
core   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Pengaruh Penambahan Montmorillonit terhadap Interaksi Fisik dan Laju Transmisi Uap Air Komposit Edible Film Xanthan Gum-Montmorillonit

Jurnal Kimia Valensi, 2017
Telah dilakukan penelitian tentang pengaruh penambahan montmorilonit terhadap interaksi fisik dan laju transmisi uap air komposit edible film xanthan gum-montmorillonit.
Widya Tri Septi Saputri, Irwan Nugraha
doaj   +1 more source

Investigation of Clay Type on Low Salinity Water Flooding Using a Glass Micromodel

Frontiers in Energy Research, 2020
Clay minerals are usually regarded as an important factor affecting the results of low salinity water (LSW) flooding. However, experiments on clay minerals are mainly in qualitative stage, the mechanism of clay minerals has not been studied completely ...
Xuemei Wei, Xuemei Wei, Wenchao Jiang, Wenchao Jiang, Yanyu Zhang, Yanyu Zhang, Zhao Wang, Zhao Wang, Xiaojun Li, Feipeng Wu, Feipeng Wu   +10 more
doaj   +1 more source

WATER SORPT ION ON CA-SATURATED CLAYS: I I. INTERNAL AND EXTERNAL SURFACES OF MONTMORILLONITE

, 1983
: Water-sorption isotherms and interlamellar spacings were measured for Ca montmorillonite (from Redhill. UK) over the relative pressure range 1> P/Po> 0.
Newman, A. C. D., E. C. Ormerod, A. C. D. Newman, Ormerod, E. C.   +3 more
core   +1 more source

Mixed‐Impurity Co‐Poisoning of NH3‐SCR Catalysts: Poisoning Mechanisms, Antagonistic Effects, and Anti‐Inactivation Strategies

EcoEnergy, EarlyView.
This review summarizes the synergistic effects of mixed impurities on ammonia‐selective catalytic reduction (NH3‐SCR) catalysts, including the poisoning mechanism of the catalyst caused by mixed impurities, the antagonistic effects between the impurities, and the research on the anti‐poisoning strategies for the catalyst in recent years.
Hongyan Xue, Manas Pal, Zhaoteng Xue, Dongsen Mao   +3 more
wiley   +1 more source

Birefringence of Montmorillonite Complexes [PDF]

Nature, 1959
DURING a study of the optical properties of montmorillonite aggregates in salt solutions1, some interesting preliminary observations were made on various aromatic complexes. These observations have now been followed up with the view of extending the use of optical data in characterizing clays.
openaire   +1 more source

Z‐Scheme BiOCl‐Based Photocatalysts: Recent Advances in Designing, Structural Engineering, Formation Mechanisms, and High Performance Photocatalytic Environmental Remediation

EcoEnergy, EarlyView.
This review deals with the recent advancements in design and engineering of BiOCl‐based Z‐scheme photocatalysts with emphasis on tailoring of structural, optoelectronic properties and heterojunction assembly for environmental applications including photodegradation of industrial organic waste, pharmaceuticals, pesticides, herbicides, toxic heavy metals,
Sakshi Sharma, Neha Kaushal, Victor Ezebuiro, Monika Sindhu, Lovepreet Singh, Yugesh Singh Thakur, Hendrik C. Swart, Jai Prakash   +7 more
wiley   +1 more source

Engineering Nanoclay Edges to Construct Effective Polysulfide‐Trapping Interface for Markedly Enhanced Electrochemical Energy Storage

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A capsule‐shaped silicate clay (H‐ATP‐N2) rich in protonated edge hydroxyl groups (‐OH2+) is synthesized through a two‐step process involving microwave‐assisted acid treatment and N2 plasma etching to fibrous natural attapulgite. The H‐ATP‐N2 host inhibits the shuttle effect owing to the dominant adsorption mechanism–Lewis acid–base interaction between
Hongjie Xu, Chenggong Zheng, Xiaofeng Zhu, Yalu Li, Zhongzheng Yang, Xiao Wang, Yuping Tong, Xi Chen, Yangyu Liu, Shilin Zhang, Junhua Hu, Guosheng Shao   +11 more
wiley   +1 more source