scholarly journals Versatile rare earth hexanuclear clusters for the design and synthesis of highly-connectedftw-MOFs

2015 ◽  
Vol 6 (7) ◽  
pp. 4095-4102 ◽  
Author(s):  
Ryan Luebke ◽  
Youssef Belmabkhout ◽  
Łukasz J. Weseliński ◽  
Amy J. Cairns ◽  
Mohamed Alkordi ◽  
...  
Keyword(s):  
Rare Earth ◽  
Gas Adsorption ◽  
Design And Synthesis ◽  
Hexanuclear Clusters

A targeted rare earthftw-MOF platform offers the potential to assess the effect of pore functionality and size on gas adsorptionvialigand functionalization and/or expansion.

Predictive Acid Gas Adsorption in Rare Earth DOBDC Metal–Organic Frameworks via Complementary Cluster and Periodic Structure Models

2020 ◽  
Vol 124 (49) ◽  
pp. 26801-26813
Author(s):  
Dayton J. Vogel ◽  
Zachary R. Lee ◽  
Caitlin A. Hanson ◽  
Susan E. Henkelis ◽  
Caris M. Smith ◽  
...  
Keyword(s):  
Rare Earth ◽  
Periodic Structure ◽  
Gas Adsorption ◽  
Metal Organic Frameworks ◽  
Acid Gas ◽  
Metal Organic

scholarly journals Playing with covalent triazine framework tiles for improved CO2 adsorption properties and catalytic performance

2019 ◽  
Vol 10 ◽  
pp. 1217-1227 ◽  
Author(s):  
Giulia Tuci ◽  
Andree Iemhoff ◽  
Housseinou Ba ◽  
Lapo Luconi ◽  
Andrea Rossin ◽  
...  
Keyword(s):  
Carbon Capture ◽  
Rational Design ◽  
Gas Adsorption ◽  
Ambient Pressure ◽  
Complex Structure ◽  
Building Blocks ◽  
Catalytic Performance ◽  
High Specific Surface Area ◽  
Morphological Properties ◽  
Design And Synthesis

The rational design and synthesis of covalent triazine frameworks (CTFs) from defined dicyano-aryl building blocks or their binary mixtures is of fundamental importance for a judicious tuning of the chemico-physical and morphological properties of this class of porous organic polymers. In fact, their gas adsorption capacity and their performance in a variety of catalytic transformations can be modulated through an appropriate selection of the building blocks. In this contribution, a set of five CTFs (CTF1–5) have been prepared under classical ionothermal conditions from single dicyano-aryl or heteroaryl systems. The as-prepared samples are highly micro-mesoporous and thermally stable materials featuring high specific surface area (up to 1860 m2·g−1) and N content (up to 29.1 wt %). All these features make them highly attractive samples for carbon capture and sequestration (CCS) applications. Indeed, selected polymers from this series rank among the CTFs with the highest CO2 uptake at ambient pressure reported so far in the literature (up to 5.23 and 3.83 mmol·g−1 at 273 and 298 K, respectively). Moreover, following our recent achievements in the field of steam- and oxygen-free dehydrogenation catalysis using CTFs as metal-free catalysts, the new samples with highest N contents have been scrutinized in the process to provide additional insights to their complex structure–activity relationship.

Nano Crystallite ZrO2, La2O3 and CeO2: Synthesis, Characterization and their Properties

2013 ◽  
Vol 209 ◽  
pp. 212-215
Author(s):  
A.K. Patel ◽  
A.R. Umatt ◽  
B.S. Chakrabarty
Keyword(s):  
Rare Earth ◽  
Surface Area ◽  
Gas Adsorption ◽  
Chemical Properties ◽  
Rare Earth Oxide ◽  
Combustion Method ◽  
Rare Earth Oxides ◽  
Precipitation Method ◽  
Reaction Conditions ◽  
The Rare Earth

It is well known that a minor addition of rare earth oxides can provide a beneficial effect towards various catalytic reactions. Use of rare earth oxide in different applications could improve commercial productivity in an affordable way. Among the rare earth oxides, ZrO2, La2O3 and CeO2 are very interesting due to their various characteristics showing a large range of applications in organic reactions. The changes in the molecular properties of materials at the nano scale level greatly enhance their physical properties as well as chemical properties and activity. Due to the extremely small size of the particles, an increased surface area is provided to the reactant enabling more molecules to react at the same time, thereby speeding up the process. In this work, the enhancement in the catalytic activity of these nano structured rare earth oxides has been studied under different reaction conditions. Nano crystalline ZrO2, La2O3 and CeO2 samples were synthesized using precipitation method and optimum reaction conditions have been established; whereas the corresponding bulk samples were synthesized by combustion method. The identification of phase and crystalline size of synthesized oxides have been done by X-ray diffraction, the band gape of these three oxides in both the forms has been analyzed by UV absorbance and surface area has been determined by gas adsorption analysis (BET). Moreover their different properties and the activity of nano crystallite oxides have also been compared with their bulk counterparts. Even the activity of ZrO2 is also compared with the rare earth oxides La2O3 and CeO2.

Engineering the Design of Brightly-Emitting Luminescent Nanostructured Photonic Composite Systems

2013 ◽  
Vol 66 (9) ◽  
pp. 1008 ◽  
Author(s):  
Mei Chee Tan ◽  
Dominik J. Naczynski ◽  
Prabhas V. Moghe ◽  
Richard E. Riman
Keyword(s):  
Rare Earth ◽  
Optical Waveguides ◽  
Impact Resistance ◽  
Synthesis Method ◽  
Research Progress ◽  
Design And Synthesis ◽  
Composite Systems ◽  
Rare Earth Doped

Rare-earth doped infrared emitting composites have extensive applications in integrated optical devices such as fibre amplifiers and waveguides for telecommunications, remote sensing, and optoelectronics. In addition, recent advancements in infrared optical imaging systems have expanded the biomedical applications for infrared-emitting composites in diagnosis and imaging of living tissue systems both in vitro and in vivo. Composite systems combine the advantages of polymers (light weight, flexibility, good impact resistance, improved biomedical compatibility, and excellent processability) and inorganic phosphor host materials (low phonon energy, intense emissions, chemical durability, and high thermal stability). This paper provides a brief review of our research progress in the design and synthesis of luminescent photonic nanocomposite systems comprised of rare-earth doped particulates dispersed in a continuous polymeric matrix. The design of brightly-emitting rare-earth doped materials and the influence of host and dopant chemistries on the emission properties are discussed. Methods used to assess and measure the phosphors’ performance are also evaluated in this work. This paper will also examine the solvothermal synthesis method used to control the physical and chemical characteristics of the rare-earth doped particles, and how these characteristics impact the infrared optical properties. Also presented here are recent advances reported with luminescent nanocomposite systems fabricated for optical waveguides and biomedical imaging.

Investigating the Influence of Hexanuclear Clusters in Isostructural Metal–Organic Frameworks on Toxic Gas Adsorption

2022 ◽  
Author(s):  
Kent O. Kirlikovali ◽  
Zhijie Chen ◽  
Xingjie Wang ◽  
Mohammad Rasel Mian ◽  
Selim Alayoglu ◽  
...  
Keyword(s):  
Gas Adsorption ◽  
Metal Organic Frameworks ◽  
Hexanuclear Clusters ◽  
Metal Organic ◽  
Toxic Gas

Design and Synthesis of Two New Two-Photon Absorbing Pyridine Salts as Ligands and Their Rare Earth Complexes

2009 ◽  
Vol 9 (3) ◽  
pp. 1499-1504 ◽  
Author(s):  
Yu-Peng Tian ◽  
Lin Li ◽  
Yong-Hong Zhou ◽  
Peng Wang ◽  
Hong-Ping Zhou ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Complexes ◽  
Design And Synthesis ◽  
Two Photon

scholarly journals Building a Shp: A New Rare-Earth Metal-Organic Framework and Its Application in a Catalytic Photo-Oxidation Reaction

2020 ◽  
Author(s):  
Victor Quezada-Novoa ◽  
Hatem M. Titi ◽  
Amy Sarjeant ◽  
Ashlee Howarth
Keyword(s):  
Rare Earth ◽  
Sulfur Mustard ◽  
Metal Organic Framework ◽  
Earth Metal ◽  
Photo Oxidation ◽  
Design And Synthesis ◽  
Concordia University ◽  
Metal Organic ◽  
First Time ◽  
Ethyl Sulfoxide

The design and synthesis of new metal–organic frameworks (MOFs) is important from both a fundamental and application standpoint. In this work, a novel, highly‐connected rare‐earth (RE) MOF with shp topology is reported, named RE‐CU‐10 (RE = rare‐earth, CU = Concordia University), comprised of nonanuclear RE(III)‐cluster nodes and tetratopic pyrene‐based linkers. This represents the first time that the 1,3,6,8‐tetrakis(p‐benzoic acid)pyrene (H4TBAPy) linker is integrated in the shp topology. Y‐CU‐10 was explored as a heterogeneous photocatalyst for the selective oxidation and detoxification of a sulfur mustard simulant, 2‐chloroethyl ethyl sulfide (2‐CEES), showing a halflife for conversion to the less toxic 2‐chloroethyl ethyl sulfoxide (2‐CEESO) of 6.0 min.<br>

scholarly journals Building a Shp: A New Rare-Earth Metal-Organic Framework and Its Application in a Catalytic Photo-Oxidation Reaction

2020 ◽  
Author(s):  
Victor Quezada-Novoa ◽  
Hatem M. Titi ◽  
Amy Sarjeant ◽  
Ashlee Howarth
Keyword(s):  
Rare Earth ◽  
Sulfur Mustard ◽  
Metal Organic Framework ◽  
Earth Metal ◽  
Photo Oxidation ◽  
Design And Synthesis ◽  
Concordia University ◽  
Metal Organic ◽  
First Time ◽  
Ethyl Sulfoxide

The design and synthesis of new metal–organic frameworks (MOFs) is important from both a fundamental and application standpoint. In this work, a novel, highly‐connected rare‐earth (RE) MOF with shp topology is reported, named RE‐CU‐10 (RE = rare‐earth, CU = Concordia University), comprised of nonanuclear RE(III)‐cluster nodes and tetratopic pyrene‐based linkers. This represents the first time that the 1,3,6,8‐tetrakis(p‐benzoic acid)pyrene (H4TBAPy) linker is integrated in the shp topology. Y‐CU‐10 was explored as a heterogeneous photocatalyst for the selective oxidation and detoxification of a sulfur mustard simulant, 2‐chloroethyl ethyl sulfide (2‐CEES), showing a halflife for conversion to the less toxic 2‐chloroethyl ethyl sulfoxide (2‐CEESO) of 6.0 min.<br>

Rational design and synthesis of an amino-functionalized hydrogen-bonded network with an ACO zeolite-like topology for gas storage

CrystEngComm ◽  
2016 ◽  
Vol 18 (30) ◽  
pp. 5616-5619 ◽  
Author(s):  
Xiao-Qing Guo ◽  
Miao Wang ◽  
Fei Meng ◽  
Yan-Feng Tang ◽  
Shu Tian ◽  
...  
Keyword(s):  
Great Improvement ◽  
Rational Design ◽  
Gas Adsorption ◽  
Gas Storage ◽  
Amino Groups ◽  
Design And Synthesis ◽  
Hydrogen Bonded

The modification of amino groups on the surface of In8 cubic SBUs comprising hydrogen-bonded networks with an ACO zeolite-like topology resulted in a great improvement in gas adsorption.

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