ChemInform Abstract: Intrinsic Kinetics in Carbon Gasification: Understanding Linearity, “Nanoworms” and Alloy Catalysts

ChemInform ◽  
2014 ◽  
Vol 45 (19) ◽  
pp. no-no
Author(s):  
Luis Sousa Lobo
Keyword(s):  
Carbon Gasification ◽  
Intrinsic Kinetics ◽  
Alloy Catalysts

scholarly journals Millisecond lattice gasification for high-density CO2- and O2-sieving nanopores in single-layer graphene

2021 ◽  
Vol 7 (9) ◽  
pp. eabf0116
Author(s):  
Shiqi Huang ◽  
Shaoxian Li ◽  
Luis Francisco Villalobos ◽  
Mostapha Dakhchoune ◽  
Marina Micari ◽  
...  
Keyword(s):  
Single Layer ◽  
High Density ◽  
Single Layer Graphene ◽  
Pore Density ◽  
Vacancy Defects ◽  
Carbon Gasification ◽  
Layer Graphene ◽  
Gas Molecules ◽  
Good Agreement

Etching single-layer graphene to incorporate a high pore density with sub-angstrom precision in molecular differentiation is critical to realize the promising high-flux separation of similar-sized gas molecules, e.g., CO2 from N2. However, rapid etching kinetics needed to achieve the high pore density is challenging to control for such precision. Here, we report a millisecond carbon gasification chemistry incorporating high density (>1012 cm−2) of functional oxygen clusters that then evolve in CO2-sieving vacancy defects under controlled and predictable gasification conditions. A statistical distribution of nanopore lattice isomers is observed, in good agreement with the theoretical solution to the isomer cataloging problem. The gasification technique is scalable, and a centimeter-scale membrane is demonstrated. Last, molecular cutoff could be adjusted by 0.1 Å by in situ expansion of the vacancy defects in an O2 atmosphere. Large CO2 and O2 permeances (>10,000 and 1000 GPU, respectively) are demonstrated accompanying attractive CO2/N2 and O2/N2 selectivities.

scholarly journals Design of ternary Pt-CoZn alloy catalysts coated with N-doped carbon towards acidic oxygen reduction

2021 ◽  
Author(s):  
Xieweiyi Ye ◽  
Yakun Xue ◽  
Kaijia Li ◽  
Wen Tang ◽  
Xiao Han ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Proton Exchange Membrane ◽  
Reduction Reaction ◽  
Proton Exchange ◽  
Commercial Applications ◽  
Exchange Membrane ◽  
Alloy Catalysts

Improving the activity and durability of Pt-based electrocatalysts used in the acidic oxygen reduction reaction (ORR) is a great task for the commercial applications of proton-exchange membrane fuel cells. Alloying...

Performance improvement of a direct carbon solid oxide fuel cell via strontium-catalyzed carbon gasification

2020 ◽  
Vol 45 (43) ◽  
pp. 23368-23377 ◽  
Author(s):  
Fangyong Yu ◽  
Tingting Han ◽  
Yishang Wang ◽  
Yujiao Xie ◽  
Jinjin Zhang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Performance Improvement ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Carbon Gasification

High-Throughput Screening of Alloy Catalysts for Dry Methane Reforming

ACS Catalysis ◽  
2021 ◽  
pp. 8881-8894
Author(s):  
Ya-Xin Yu ◽  
Jie Yang ◽  
Ka-Ke Zhu ◽  
Zhi-Jun Sui ◽  
De Chen ◽  
...  
Keyword(s):  
High Throughput ◽  
High Throughput Screening ◽  
Methane Reforming ◽  
Alloy Catalysts

scholarly journals Enhanced oxygen reduction activity with rare earth metal alloy catalysts in proton exchange membrane fuel cells

2021 ◽  
pp. 138454
Author(s):  
Björn Eriksson ◽  
Gerard Montserrat-Sisó ◽  
Rosemary Brown ◽  
Tomáš Skála ◽  
Rakel Wreland Lindström ◽  
...  
Keyword(s):  
Rare Earth ◽  
Fuel Cells ◽  
Oxygen Reduction ◽  
Rare Earth Metal ◽  
Proton Exchange Membrane ◽  
Earth Metal ◽  
Proton Exchange ◽  
Reduction Activity ◽  
Exchange Membrane ◽  
Alloy Catalysts

scholarly journals A quick and versatile one step metal–organic chemical deposition method for supported Pt and Pt-alloy catalysts

RSC Advances ◽  
2020 ◽  
Vol 10 (34) ◽  
pp. 19982-19996 ◽  
Author(s):  
Colleen Jackson ◽  
Graham T. Smith ◽  
Nobuhle Mpofu ◽  
Jack M. S. Dawson ◽  
Thulile Khoza ◽  
...  
Keyword(s):  
Carbon Nanofiber ◽  
Chemical Deposition ◽  
Organic Chemical ◽  
Nanoparticle Deposition ◽  
Support Materials ◽  
Pt Alloy ◽  
Metal Organic ◽  
One Step ◽  
Chemical Deposition Method ◽  
Alloy Catalysts

A simple, modified Metal–Organic Chemical Deposition (MOCD) method for Pt, PtRu and PtCo nanoparticle deposition onto a variety of support materials, including C, SiC, B4C, LaB6, TiB2, TiN and a ceramic/carbon nanofiber, is described.

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