One-Pot Preparation and Uranyl Adsorption Properties of Hierarchically Porous Zirconium Titanium Oxide Beads using Phase Separation Processes to Vary Macropore Morphology

Langmuir ◽  
2010 ◽  
Vol 26 (22) ◽  
pp. 17581-17588 ◽  
Author(s):  
Glenna L. Drisko ◽  
Maryline Chee Kimling ◽  
Nicholas Scales ◽  
Andreas Ide ◽  
Erden Sizgek ◽  
...  
Keyword(s):  
Phase Separation ◽  
Titanium Oxide ◽  
Adsorption Properties ◽  
Separation Processes ◽  
One Pot ◽  
Hierarchically Porous

One-Pot Route to Produce Hierarchically Porous Titania Thin Films by Controlled Self-Assembly, Swelling, and Phase Separation

2009 ◽  
Vol 21 (13) ◽  
pp. 2763-2769 ◽  
Author(s):  
Luca Malfatti ◽  
Martín G. Bellino ◽  
Plinio Innocenzi ◽  
Galo J. A. A. Soler-Illia
Keyword(s):  
Thin Films ◽  
Phase Separation ◽  
Self Assembly ◽  
One Pot ◽  
Hierarchically Porous ◽  
Porous Titania

Hierarchical nano-porous biochar prepared by MgO template method for high performance of PNP adsorption

2021 ◽  
Author(s):  
Honghai Li ◽  
Xiaoke Li ◽  
Junwei Ding ◽  
Xin Li ◽  
Wenting Zhao ◽  
...  
Keyword(s):  
High Performance ◽  
Adsorption Properties ◽  
Magnesium Acetate ◽  
Template Method ◽  
Acetate Solution ◽  
Enteromorpha Prolifera ◽  
One Pot

Abstract: Hierarchical nano-porous biochar (HNBC) was prepared by one-pot pyrolysis of Enteromorpha prolifera (EP) powder after impregnation with magnesium acetate solution, which was utilized to investigate the adsorption properties for...

One-Pot Synthesis and CO2 Adsorption Properties of Ordered Mesoporous SBA-15 Materials Functionalized with APTMS

2011 ◽  
Vol 115 (26) ◽  
pp. 12873-12882 ◽  
Author(s):  
Shiyou Hao ◽  
Hong Chang ◽  
Qiang Xiao ◽  
Yijun Zhong ◽  
Weidong Zhu
Keyword(s):  
Co2 Adsorption ◽  
Adsorption Properties ◽  
One Pot ◽  
One Pot Synthesis ◽  
Ordered Mesoporous

A facile one-pot synthesis of hierarchically porous Cu(I)-ZSM-5 for radicals-involved oxidation of cyclohexane

2013 ◽  
Vol 451 ◽  
pp. 112-119 ◽  
Author(s):  
Xiaoxia Zhou ◽  
Hangrong Chen ◽  
Xiangzhi Cui ◽  
Zile Hua ◽  
Yu Chen ◽  
...  
Keyword(s):  
One Pot ◽  
Hierarchically Porous ◽  
One Pot Synthesis

Metal-Alkali Catalytic Valorization of Lignocellulose Towards Aromatics and Small Molecular Alcohols and Acids in a Holistic Approach

2021 ◽  
Author(s):  
Wei Lv ◽  
Yuting Zhu ◽  
Weiqi Mai ◽  
Changhui Zhu ◽  
Qifeng Pi ◽  
...  
Keyword(s):  
Phase Separation ◽  
Room Temperature ◽  
Holistic Approach ◽  
Woody Biomass ◽  
Solvent System ◽  
Effective Strategy ◽  
One Pot ◽  
Reaction Phase ◽  
Alkali Catalysts ◽  
O Phase

Abstract In this work, we developed an approach of one-pot completely catalytic conversion of woody biomass into two value product streams: lignin-derived aromatics (68.54% monomer and 29.65% oligomer yields of lignin) and (semi-)cellulose-derived small molecular alcohols (about 59.60% of biomass mass). These could be afforded by conducting lignocellulose depolymerization over metal-alkaline catalysts in a mixture n-butanol/H2O solvent system at 250 °C and 30 bar H2. In the valorization process, the homogenous mixture of n-butanol-H2O solvents extract and depolymerize both lignin and hemicellulose, while the catalysts and H2 are essential to cleave the inter-/intramolecular linkages of lignocellulose into target products. After the reaction, phase separation of n-butanol and H2O takes place when systematic temperature at room temperature, providing a mild and effective strategy to isolate lignin-derived aromatics (n-butanol phase) from small molecular alcohols/acids (aqueous phase). Ru/C and alkali catalysts are collected by filtration from n-butanol phase and H2O phase, respectively. Meanwhile, the effect of metal-alkali coupled catalysts enables facilitating the cleavage of β-O-4 linkage of lignin and increasing the attainability of (semi-)cellulose-derived oligomers and the small molecular alcohols. This catalytic system provides a versatile valorization approach for biomass catalytic to bio-based chemicals.

scholarly journals Gelation Impairs Phase Separation and Small Molecule Migration in Polymer Mixtures

Polymers ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1576
Author(s):  
Biswaroop Mukherjee ◽  
Buddhapriya Chakrabarti
Keyword(s):  
Phase Separation ◽  
Rational Design ◽  
Surface Segregation ◽  
Multiscale Methods ◽  
Coarse Grained ◽  
Polymer Gel ◽  
Polymer Mixtures ◽  
Separation Processes ◽  
Surface Migration ◽  
Wide Range

Surface segregation of the low molecular weight component of a polymeric mixture is a ubiquitous phenomenon that leads to degradation of industrial formulations. We report a simultaneous phase separation and surface migration phenomena in oligomer–polymer ( O P ) and oligomer–gel ( O G ) systems following a temperature quench that induces demixing of components. We compute equilibrium and time varying migrant (oligomer) density profiles and wetting layer thickness in these systems using coarse grained molecular dynamics (CGMD) and mesoscale hydrodynamics (MH) simulations. Such multiscale methods quantitatively describe the phenomena over a wide range of length and time scales. We show that surface migration in gel–oligomer systems is significantly reduced on account of network elasticity. Furthermore, the phase separation processes are significantly slowed in gels leading to the modification of the well known Lifshitz–Slyozov–Wagner (LSW) law ℓ ( τ ) ∼ τ 1 / 3 . Our work allows for rational design of polymer/gel–oligomer mixtures with predictable surface segregation characteristics that can be compared against experiments.

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