Mesoporous alumina–zirconia–organosilica composites for CO2 capture at ambient and elevated temperatures

2015 ◽  
Vol 3 (6) ◽  
pp. 2707-2716 ◽  
Author(s):  
Chamila Gunathilake ◽  
Mietek Jaroniec
Keyword(s):  
Co2 Capture ◽  
Triblock Copolymer ◽  
Elevated Temperatures ◽  
Mesoporous Alumina ◽  
Pluronic P123 ◽  
Bridging Groups ◽  
Binary Composite

New ternary and binary composite mesostructures consisting of alumina, zirconia and organosilica with isocyanurate bridging groups were synthesized via co-condensation of suitable precursors in the presence of a triblock copolymer, Pluronic P123.

scholarly journals Facile Synthesis and Surface Characterization of Titania-Incorporated Mesoporous Organosilica Materials

2019 ◽  
Vol 3 (3) ◽  
pp. 77
Author(s):  
Chamila Gunathilake ◽  
Chandrakantha Kalpage ◽  
Murthi Kadanapitiye ◽  
Rohan S. Dassanayake ◽  
Amanpreet S. Manchanda ◽  
...  
Keyword(s):  
Thermal Treatment ◽  
Triblock Copolymer ◽  
Surface Characterization ◽  
Titanium Isopropoxide ◽  
Ethanol Solution ◽  
Molar Ratio ◽  
Initial Reaction ◽  
Pluronic P123 ◽  
Synthesis Strategy ◽  
Bridging Groups

Titania-incorporated organosilica-mesostructures (Ti-MO) were synthesized using tris [3-(trimethoxysilyl)propyl]isocyanurate, tetraethylorthosilicate as silica precursors, and titanium isopropoxide as the titanium precursor via a co-condensation method in the presence of the triblock copolymer, Pluronic P123. The triblock copolymer was completely removed by extraction with a 95% ethanol solution, followed by a thermal treatment at 350 °C under flowing nitrogen without decomposing isocyanurate bridging groups. The molar ratio of titanium to silica in the mesostructures was gradually changed by increasing the amount of tetraethylorthosilicate in the initial reaction mixture. Our synthesis strategy also allowed us to tailor both adsorption and structural properties, including a well-developed specific surface area, high microporosity, and large pore volume. A portion of the samples was thermally treated at 600 °C to remove both the block copolymer and bridging groups. The thermal treatment at 600 °C was used to convert the amorphous titania into a crystalline anatase form. The Ti-MO materials were characterized using a N2 adsorption desorption analysis, thermogravimetric analysis (TGA), solid state nuclear magnetic resonance (NMR), transmission electron microscope (TEM), and X-ray powder diffraction (XRD). CO2 adsorption studies were also conducted to determine the basicity of the Ti-MO materials. The effect of the surface properties on the CO2 sorption was also identified.

Periodic Mesoporous Organosilicas PMOs with Different Organic Bridging Groups: Synthesis and Characterization

2002 ◽  
Vol 726 ◽  
Author(s):  
Vivian Rebbin ◽  
Olaf Muth ◽  
Michael Fröba
Keyword(s):  
Ir Spectroscopy ◽  
Triblock Copolymer ◽  
Synthesis And Characterization ◽  
Structure Directing Agent ◽  
Periodic Mesoporous Organosilicas ◽  
Pluronic P123 ◽  
Mesoporous Organosilicas ◽  
Bridging Groups

AbstractWe present results on new periodic mesoporous organosilicas synthesized with 1,4-bis(triethoxysilyl)benzene (BTEB), 1,2-bis(trimethoxysilyl)ethane (BTME) and bis[3-(trimethoxysilyl)propyl]amine (BTMPA). The materials show high inner surfaces up to 830 m2/g and pore diameters in the range of 2.7 to 3.7 nm depending on the structure directing agent used. In case of BTEB as precursor and triblock copolymer Pluronic P123 as structure directing agent exceptional thick pore walls were obtained (7.2 nm). Characterization was carried out by P-XRD, nitrogen physisorption analysis, thermoanalytical methods and IR spectroscopy.

Interfacial assembled preparation of porous carbon composites for selective CO2 capture at elevated temperatures

2019 ◽  
Vol 7 (10) ◽  
pp. 5402-5408 ◽  
Author(s):  
Li-Ping Guo ◽  
Wen-Cui Li ◽  
Bin Qiu ◽  
Zhan-Xin Ren ◽  
Jie Du ◽  
...  
Keyword(s):  
Co2 Capture ◽  
Porous Carbon ◽  
Elevated Temperatures ◽  
Carbon Composites

Interfacial assembled preparation of nanoclay integrated porous carbon composites shows superior CO2 capture performance at elevated temperatures.

Mesoporous carbonaceous materials prepared from used cigarette filters for efficient phenol adsorption and CO2 capture

RSC Advances ◽  
2015 ◽  
Vol 5 (130) ◽  
pp. 107299-107306 ◽  
Author(s):  
Aibing Chen ◽  
Yonglei Li ◽  
Yifeng Yu ◽  
Yuetong Li ◽  
Linsong Zhang ◽  
...  
Keyword(s):  
Co2 Capture ◽  
Triblock Copolymer ◽  
Carbon Precursor ◽  
Carbonaceous Materials ◽  
Phenol Adsorption ◽  
The Matrix

Mesoporous carbonaceous materials are synthesized using resol as the carbon precursor, triblock copolymer F127 as the template and cigarette filters as the matrix scaffold, and exhibit notable phenol adsorption and CO2 capture.

RETRACTED: Morphological Control of CaCO3 Particles by Pluronic P123 Triblock Copolymer in Aqueous Solution

2007 ◽  
Vol 23 (10) ◽  
pp. 1487-1492 ◽  
Author(s):  
X JIANG ◽  
J CAO ◽  
M ZHENG ◽  
J GUO ◽  
S DENG ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Triblock Copolymer ◽  
Morphological Control ◽  
Pluronic P123

How does bile salt penetration affect the self-assembled architecture of pluronic P123 micelles? – light scattering and spectroscopic investigations

2015 ◽  
Vol 17 (30) ◽  
pp. 19977-19990 ◽  
Author(s):  
Arpita Roy ◽  
Niloy Kundu ◽  
Debasis Banik ◽  
Jagannath Kuchlyan ◽  
Nilmoni Sarkar
Keyword(s):  
Light Scattering ◽  
Bile Salt ◽  
Bile Salts ◽  
Triblock Copolymer ◽  
Sodium Taurocholate ◽  
Sodium Deoxycholate ◽  
The Self ◽  
Spectroscopic Investigations ◽  
Pluronic P123 ◽  
Supramolecular Aggregate

The triblock copolymer of the type (PEO)20–(PPO)70–(PEO)20 (P123) forms a mixed supramolecular aggregate with different bile salts, sodium deoxycholate (NaDC) and sodium taurocholate (NaTC), having different hydrophobicity.

Mesoporous calcium oxide–silica and magnesium oxide–silica composites for CO2 capture at ambient and elevated temperatures

2016 ◽  
Vol 4 (28) ◽  
pp. 10914-10924 ◽  
Author(s):  
Chamila Gunathilake ◽  
Mietek Jaroniec
Keyword(s):  
Greenhouse Gases ◽  
Porous Materials ◽  
Magnesium Oxide ◽  
Calcium Oxide ◽  
Co2 Capture ◽  
Elevated Temperatures ◽  
Metal Species ◽  
Basic Metal

Incorporation of basic metal species (oxides) such as magnesium oxide and calcium oxide into porous materials is a logical strategy for enlarging the uptake of acidic greenhouse gases such as CO2.

Selective morphologies of MgO via nanoconfinement on γ-Al2O3 and reduced graphite oxide (rGO): improved CO2 capture capacity at elevated temperatures

CrystEngComm ◽  
2014 ◽  
Vol 16 (37) ◽  
pp. 8825-8831 ◽  
Author(s):  
Xiaoxue Zhang ◽  
Kaipei Qiu ◽  
Erkki Levänen ◽  
Zheng Xiao Guo
Keyword(s):  
Co2 Capture ◽  
Graphite Oxide ◽  
Elevated Temperatures ◽  
Reduced Graphite Oxide ◽  
Co2 Capture Capacity ◽  
Capture Capacity

Distinct morphologies of MgO were obtained using γ-Al2O3 and rGO as substrates, and their effects on CO2 uptake are discussed.

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