Catalytic deoxygenation on transition metal carbide catalysts

2016 ◽  
Vol 6 (3) ◽  
pp. 602-616 ◽  
Author(s):  
Mark M. Sullivan ◽  
Cha-Jung Chen ◽  
Aditya Bhan
Keyword(s):  
Transition Metal ◽  
Transition Metal Carbide ◽  
Metal Carbide ◽  
Metal Carbides ◽  
Transition Metal Carbides ◽  
Catalytic Function ◽  
Catalytic Deoxygenation ◽  
Selective Deoxygenation

We highlight the evolution and tunability of catalytic function of transition metal carbides under oxidative and reductive environments for selective deoxygenation reactions.

scholarly journals Tuning transition metal carbide activity by surface metal alloying: a case study on CO2capture and activation

2018 ◽  
Vol 20 (34) ◽  
pp. 22179-22186 ◽  
Author(s):  
Martí López ◽  
Luke Broderick ◽  
John J. Carey ◽  
Francesc Viñes ◽  
Michael Nolan ◽  
...  
Keyword(s):  
Transition Metal ◽  
Density Functional ◽  
State Of The Art ◽  
Transition Metal Carbide ◽  
Metal Carbide ◽  
Metal Carbides ◽  
Early Transition Metal ◽  
Transition Metal Carbides ◽  
Surface Metal

The CO2capture and activation on early transition metal carbides can be fine-tuned by surface doping of similar metals as evidenced by state-of-the-art density functional simulations of the adsorption and desorption rates on suited models.

Transition metal carbide-based materials: synthesis and applications in electrochemical energy storage

2016 ◽  
Vol 4 (27) ◽  
pp. 10379-10393 ◽  
Author(s):  
Ying Xiao ◽  
Jang-Yeon Hwang ◽  
Yang-Kook Sun
Keyword(s):  
Transition Metal ◽  
Electrochemical Energy Storage ◽  
Transition Metal Carbide ◽  
Metal Carbide ◽  
Metal Carbides ◽  
Materials Synthesis ◽  
High Chemical ◽  
Transition Metal Carbides ◽  
The Past ◽  
High Chemical Stability

Transition metal carbides have attracted vast interest over the past years due to their appealing properties such as high conductivity, high chemical stability and thermal stability.

Stabilizing polysulfide-shuttle in a Li–S battery using transition metal carbide nanostructures

RSC Advances ◽  
2016 ◽  
Vol 6 (111) ◽  
pp. 110301-110306 ◽  
Author(s):  
Hesham Al Salem ◽  
Venkateswara Rao Chitturi ◽  
Ganguli Babu ◽  
Juan A. Santana ◽  
Deepesh Gopalakrishnan ◽  
...  
Keyword(s):  
Transition Metal ◽  
Transition Metal Carbide ◽  
Metal Carbide ◽  
Metal Carbides ◽  
Practical Applications ◽  
Polysulfide Shuttle

Metal carbides nanostrcutures to stabilize polysulfide shuttle which is a key bottleneck for practical applications of Li–S battery.

Titanium Carbide from Carboxylic Acid Modified Alkoxides

1992 ◽  
Vol 271 ◽  
Author(s):  
Tom Gallo ◽  
Carl Greco ◽  
Claude Peterson ◽  
Frank Cambria ◽  
Johst Burk
Keyword(s):  
Transition Metal ◽  
Carbon Content ◽  
Polymeric Materials ◽  
Dicarboxylic Acids ◽  
Transition Metal Carbide ◽  
Metal Carbide ◽  
Metal Carbides ◽  
X Ray Diffraction ◽  
Increase Carbon Content ◽  
Reducing Conditions

ABSTRACTTransition metal carbide precursors have been made in the past by the reaction of alkoxides with polymeric materials to form gels and resins. A new route to transition metal carbide precursors has been developed using alkoxides polymerized with dicarboxylic acids. (Dicarboxylic acid precursors have the advantage of precipitating as powders that can be removed from solvents by filtration and that are not very air sensitive.) Precursors were pyrolyzed under inert or reducing conditions to form metal carbides.The choice of ligand(s) determined the carbon content after pyrolysis. Unsaturated ligands tended to increase carbon content. Materials from oils to fine powders were produced by varying the stereochemistry of the ligands. The morphology of the pyrolyzed product mimicked that of the precipitated powder. Pyrolysis was typically carried out under Ar/H2 at 1200–1600°C. X-ray diffraction (XRD) was used to follow the incorporation of carbon into the lattice.

Tuning Transition Metal Carbides Activity by Surface Metal Alloying: Case Study on CO2 Capture and Activation

2018 ◽  
Author(s):  
Marti Lopez ◽  
Luke Broderick ◽  
John J Carey ◽  
Francesc Vines ◽  
Michael Nolan ◽  
...  
Keyword(s):  
Transition Metal ◽  
Co2 Capture ◽  
Density Functional ◽  
Deep Understanding ◽  
Metal Carbides ◽  
Transition Metal Carbides ◽  
Adsorption Sites ◽  
Surface Metal ◽  
A Minor

<div>CO2 is one of the main actors in the greenhouse effect and its removal from the atmosphere is becoming an urgent need. Thus, CO2 capture and storage (CCS) and CO2 capture and usage (CCU) technologies are intensively investigated as technologies to decrease the concentration</div><div>of atmospheric CO2. Both CCS and CCU require appropriate materials to adsorb/release and adsorb/activate CO2, respectively. Recently, it has been theoretically and experimentally shown that transition metal carbides (TMC) are able to capture, store, and activate CO2. To further improve the adsorption capacity of these materials, a deep understanding of the atomic level processes involved is essential. In the present work, we theoretically investigate the possible effects of surface metal doping of these TMCs by taking TiC as a textbook case and Cr, Hf, Mo, Nb, Ta, V, W, and Zr as dopants. Using periodic slab models with large</div><div>supercells and state-of-the-art density functional theory based calculations we show that CO2 adsorption is enhanced by doping with metals down a group but worsened along the d series. Adsorption sites, dispersion and coverage appear to play a minor, secondary constant effect. The dopant-induced adsorption enhancement is highly biased by the charge rearrangement at the surface. In all cases, CO2 activation is found but doping can shift the desorption temperature by up to 135 K.</div>

scholarly journals Predicting the Effect of Dopants on CO2 Adsorption in Transition Metal Carbides: Case Study on TiC (001)

2020 ◽  
Vol 124 (29) ◽  
pp. 15969-15976 ◽  
Author(s):  
Martí López ◽  
Francesc Viñes ◽  
Michael Nolan ◽  
Francesc Illas
Keyword(s):  
Transition Metal ◽  
Co2 Adsorption ◽  
Metal Carbides ◽  
Transition Metal Carbides

scholarly journals True Nature of the Transition-Metal Carbide/Liquid Interface Determines Its Reactivity

ACS Catalysis ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 4920-4928
Author(s):  
Christoph Griesser ◽  
Haobo Li ◽  
Eva-Maria Wernig ◽  
Daniel Winkler ◽  
Niusha Shakibi Nia ◽  
...  
Keyword(s):  
Transition Metal ◽  
Liquid Interface ◽  
Transition Metal Carbide ◽  
Metal Carbide ◽  
True Nature

scholarly journals Solvent‐Assisted Anisotropic Cleavage of Transition Metal Carbide into 2D Nanoflakes

2021 ◽  
pp. 2100039
Author(s):  
Chen-Xia Hu ◽  
Zhen Tian ◽  
Qi Xiao ◽  
Zhen-Tong Zhu ◽  
Xiang-Yang Li ◽  
...  
Keyword(s):  
Transition Metal ◽  
Transition Metal Carbide ◽  
Metal Carbide
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