You are currently viewing the summary.
View Full TextLog in to view the full text
AAAS login provides access to Science for AAAS members, and access to other journals in the Science family to users who have purchased individual subscriptions.
More options
Download and print this article for your personal scholarly, research, and educational use.
Buy a single issue of Science for just $15 USD.
Summary
Surface defects of nanomaterials can serve as active sites for adsorption and chemical transformations in heterogeneous catalysis (1, 2). However, the defects in catalyst supports can also induce carbon deposition to deactivate the catalysts. This issue is particularly relevant for supported metal catalysts, a major category of heterogeneous catalysts, which deactivate because of the formation of carbon-based materials on catalyst surfaces after prolonged use, through a process called coking (3). Developing supported metal catalysts with coking and sintering resistance with high catalytic activity in high-temperature applications remains a great challenge (4). On page 777 of this issue, Song et al. (5) address this critical issue by choosing a defect-free single-crystalline magnesium oxide (MgO) as a support and then blocking the active step edges with nickel-molybdenum (Ni–Mo) nanocatalysts, achieving coke- and sintering-resistant activity in quantitative production of synthesis gas from dry reforming of methane (CH4).
This is an article distributed under the terms of the Science Journals Default License.