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Clingy Copper Ions Contribute to Catalyst Slowdown

Date Time
Clingy Copper Ions Contribute to Catalyst Slowdown
Heavy-duty diesel trucks on the road today are equipped with aftertreatment systems that include selective catalytic reduction (SCR) technology using urea solution as a reducing agent to curtail harmful nitrogen oxide (NOx) emissions from engine exhaust before they reach the tailpipe. SCRs rely on a catalyst to help chemically convert NOx gases into nitrogen, water, and small amounts of carbon dioxide.
Like anything else subject to the laws of nature, catalysts-materials that help a desired reaction efficiently take place-tend to slow down the longer they are in use. Scientists at Pacific Northwest National Laboratory (PNNL), working with researchers at Washington State University and Tsinghua University, discovered a mechanism behind the decline in performance of an advanced copper-based catalyst. The team’s findings, featured on the cover of the journal ACS Catalysis, could aid the design of catalysts tha ....

Jean Sabin Mcewen , Junhua Li , Ying Chen , Yani Zhang , Yue Peng , Feng Gao , Yong Wang , Kyle Groden , Eric Walter , Environmental Molecular Sciences Laboratory , Washington State University , Renewable Energy , Vehicle Technologies Office , Scientists At Pacific Northwest National Laboratory , Sciences Division , Tsinghua University , Pacific Northwest National Laboratory , Journal Cover , Energy Office , Energy Efficiency , Active Site Relocation , Kinetics Studies , With Gao , Washington State , ஜீன் சபின் மக்ய்வந் , யிங் சென் ,

Making better catalysts by understanding water | WSU Insider | Washington State University

December 22, 2020
Illustration of the bonding between a single water molecule to a metal surface that was computationally modeled by the McEwen group and compared to the measurements of the Wu group.
If used in the right way, water could help improve catalysts used for thermochemical reactions: lowering energy barriers and more efficiently converting biomaterials to fuels, according to a new study in the journal,
Although it is generally preferable to remove water from reactions, work led by Jean-Sabin McEwen and Di Wu in the Gene and Linda Voiland School of Chemical Engineering and Bioengineering, could lead to better ways of using water in processes that make renewable energy more viable. ....

Jean Sabin Mcewen , Linda Voiland School Of Chemical Engineering , Office Of Basic Energy Sciences , Division Of Chemical Sciences , Us Department Of Energy , Linda Voiland School , Chemical Engineering , Basic Energy Sciences , Chemical Sciences , Catalysis Science , ஜீன் சபின் மக்ய்வந் , லிண்டா வோய்லாண்ட் பள்ளி ஆஃப் இரசாயன பொறியியல் , அலுவலகம் ஆஃப் அடிப்படை ஆற்றல் அறிவியல் , பிரிவு ஆஃப் இரசாயன அறிவியல் , எங்களுக்கு துறை ஆஃப் ஆற்றல் , லிண்டா வோய்லாண்ட் பள்ளி , இரசாயன பொறியியல் , அடிப்படை ஆற்றல் அறிவியல் , இரசாயன அறிவியல் , வினையூக்கம் அறிவியல் ,