scholarly journals Combining Experimental Isotherms, Minimalistic Simulations, and a Model to Understand and Predict Chemical Adsorption onto Montmorillonite Clays

ACS Omega ◽  
2021 ◽  
Author(s):  
Asuka A. Orr ◽  
Meichen Wang ◽  
Burcu Beykal ◽  
Hari S. Ganesh ◽  
Sara E. Hearon ◽  
...  
Keyword(s):  
Chemical Adsorption ◽  
Montmorillonite Clays

Synthesis of 3,4-Dihydropyrimidin-2(1H)-one Derivatives Using Activated Montmorillonite as Catalyst

2018 ◽  
Vol 16 (1) ◽  
pp. 59-65
Author(s):  
Sofiane Mekki ◽  
Lahcen Krabia ◽  
Saleh Mahmoud Saleh Mohamed ◽  
Salima Saidi-Besbes
Keyword(s):  
Catalytic Synthesis ◽  
Montmorillonite Clays

An efficient catalytic synthesis of 4-aryl-3,4-dihydropyrimidine-2(1H)-one derivatives using copper (II), iron (III) and zinc (II) exchanged montmorillonite clays as a catalyst is described. The desired products were obtained in good yields.

scholarly journals A review of biomass materials for advanced lithium–sulfur batteries

2019 ◽  
Vol 10 (32) ◽  
pp. 7484-7495 ◽  
Author(s):  
Huadong Yuan ◽  
Tiefeng Liu ◽  
Yujing Liu ◽  
Jianwei Nai ◽  
Yao Wang ◽  
...  
Keyword(s):  
Recent Progress ◽  
Low Cost ◽  
High Abundance ◽  
Chemical Adsorption ◽  
Environmental Friendliness ◽  
Lithium Sulfur Batteries ◽  
Biomass Materials ◽  
Physical And Chemical ◽  
Lithium Sulfur

This review summarizes recent progress of biomass-derived materials in Li–S batteries. These materials are promising due to their advantages including strong physical and chemical adsorption, high abundance, low cost, and environmental friendliness.

Evaluation of U(VI) adsorption from Ca2+ coexisted bicarbonate solution by synthetic inorganic and mineral materials

2020 ◽  
Vol 108 (12) ◽  
pp. 955-965
Author(s):  
Jun Liu ◽  
Shilong Shi ◽  
XiaoYu Yin ◽  
Yong Jin ◽  
Chunhai Lu ◽  
...  
Keyword(s):  
Manganese Dioxide ◽  
Structural Stability ◽  
Adsorption Process ◽  
Natural Uranium ◽  
Chemical Adsorption ◽  
Surface Chemical ◽  
Weakly Alkaline ◽  
Adsorption Behaviors ◽  
Study Results ◽  
Kinetics And Isotherms

AbstractPart weakly alkaline natural uranium-containing water contains abundant Ca2+ and (bi)carbonate. Herein, two kinds of materials, namely mesoporous hydrous manganese dioxide (MHMO) and polyacrylonitrile (PAN)/dolomite composites were synthesized and characterized to evaluate their adsorption behaviors of U(VI) from Ca2+ coexisted bicarbonate solution. Characterization results showed that both samples exhibited good structural stability after U(VI) load. MHMO could coordinate U(VI) through the surface –OH sites, whereas an unfavorable U(VI) adsorption onto mineral composites was deduced. Adsorption tests indicated that increasing Ca2+ and (bi)carbonate amounts suppress U(VI) adsorption process, and ∼19.0 mg/g U adsorbed by MHMO could be obtained in solutions with 1 mmol/L [Ca2+], 5 mmol/L [CO3]T, 50 mg/L [U(VI)]initial at pH 8.0. Moreover, a heterogeneous surface chemical adsorption was verified through kinetics and isotherms study. Results from our study should be useful in exploring the adsorption behaviors and mechanisms of U(VI) on selected inorganic and mineral materials from natural uranium-containing water.

The Preparation of Carbon Microspheres Loading Silver Antimicrobial Agent and the Study of its Properties

2012 ◽  
Vol 550-553 ◽  
pp. 1026-1029
Author(s):  
Jian Xi Ren ◽  
Jing Ya Li ◽  
Zhi Feng Cai ◽  
Jin Ming Dai ◽  
Mei Niu ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Electron Microscope ◽  
Antibacterial Agent ◽  
Chemical Adsorption ◽  
Carbon Microspheres ◽  
Bacterial Inhibition ◽  
Good Antibacterial Activity ◽  
Scanning Electron

Carbon microspheres (CMSs) were used as the carrier to prepare the Ag-loading CMSs (Ag/CMSs) antibacterial agent through the method of chemical adsorption. The morphologies and structures of modified CMSs were characterized by using the field emission Scanning Electron Microscope (SEM). The results showed that silver was absorbed on the surface of CMSs. The bacterial inhibition ring experiment showed that Ag/CMSs had good antibacterial activity against Staphylococcus aureus and Escherichia coli, meanwhile the diameters of the bacterial inhibition rings were 19 mm against Staphylococcus aureus and 21 mm against Escherichia coli, respectively.

Remarkable chemical adsorption of manganese-doped titanate for direct carbon dioxide electrolysis

2014 ◽  
Vol 2 (19) ◽  
pp. 6904-6915 ◽  
Author(s):  
Wentao Qi ◽  
Yun Gan ◽  
Di Yin ◽  
Zhenyu Li ◽  
Guojian Wu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Oxygen Vacancies ◽  
Solid Oxide ◽  
Chemical Adsorption ◽  
Adsorption Of Co ◽  
Significant Concentration

Remarkable chemical adsorption of CO2 has been achieved in titanate with significant concentration of oxygen vacancies towards the efficient direct CO2 electrolysis in solid oxide electrolysers.

Thermodynamics Study on Catalytic Hydrolysis of CCl2F2 over Solid Acid MoO3/ZrO2

2013 ◽  
Vol 726-731 ◽  
pp. 535-538
Author(s):  
Tian Cheng Liu ◽  
Yu Jiao Guo ◽  
Ping Ning ◽  
Guang Yang Tang ◽  
Ming Long Yuan
Keyword(s):  
Water Vapor ◽  
Solid Acid ◽  
Exothermic Reaction ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Catalytic Hydrolysis ◽  
Chemical Adsorption ◽  
Freundlich Model ◽  
Hydrolysis Of

Catalytic hydrolysis decomposition of dichlorodifluoromethane (CCl2F2) in the presence of water vapor and oxygen was studied over solid acid MoO3/ZrO2 using a fixed-bed reactor. The CCl2F2 adsorption was multilayer chemical adsorption and its process was corresponding with Freundlich model. Its heat was from 56.3 to 73.2 KJ.mol-1, and it was exothermic reaction and chemical adsorption.

Strength and Consolidation Mechanism of Green Pellets Containing Carbon

2011 ◽  
Vol 402 ◽  
pp. 215-220 ◽  
Author(s):  
Ru Fei Wei ◽  
Jia Xin Li ◽  
Guang Wu Tang
Keyword(s):  
Compressive Strength ◽  
Capillary Force ◽  
Phenolic Resin ◽  
Viscous Force ◽  
Chemical Adsorption ◽  
Adsorption Effect ◽  
Green Pellet ◽  
Pellet Strength ◽  
Better Than

The effects of four inorganic binders and four organic binders on strength of green pellet containing carbon were studied. The results show that phenolic resin is the best binder, compressive strength and drop strength of preheated pellet are 312.5 N and 15.1 times, respectively, when the matching was 2%. The reason is that chemical adsorption effect occurs in pellet. Strength of wet pellet is mainly maintained by capillary force. However, preheated pellet is mainly maintained by chemical adsorption effect and viscous force. Chemical adsorption effect is better than viscous force.

WETTABILITY OF MONTMORILLONITE CLAYS IN HUMIC ACID SOLUTIONS

2003 ◽  
Vol 51 (1) ◽  
pp. 65-74 ◽  
Author(s):  
Juan de Dios García López-Durán ◽  
Asmae Khaldoun ◽  
Mohamed Larbi Kerkeb ◽  
María del Mar Ramos-Tejada ◽  
Fernando González-Caballero
Keyword(s):  
Humic Acid ◽  
Acid Solutions ◽  
Montmorillonite Clays

Thin film characteristics of fluorine-substituted monolayers prepared by chemical adsorption from solution

1993 ◽  
Vol 230 (2) ◽  
pp. 209-216 ◽  
Author(s):  
Norihisa Mino ◽  
Kazufumi Ogawa ◽  
Takatoshi Minoda ◽  
Masahiro Takatsuka ◽  
Seimei Sha ◽  
...  
Keyword(s):  
Thin Film ◽  
Chemical Adsorption ◽  
Adsorption From Solution ◽  
Film Characteristics
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