Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Charles E. Lyman"'
Publikováno v:
Catalysis Letters. 138:148-154
A logical microstructure-based design methodology has been applied to design a Pt–Ni/γ-Al2O3 catalyst for the reduction of NO with H2. Synergy in activity and selectivity were observed. The Pt–Ni nanoparticles on the synergistic catalyst were de
Publikováno v:
Catalysis Letters. 135:33-40
Rhodium has been replaced in a synergistic Pt–Rh/γ-Al2O3 catalyst for the reduction of NO with H2 with a less expensive transition metal (Co). Performance in activity and selectivity was still better than Pt alone, thus synergy was again obtained.
Publikováno v:
Journal of Catalysis. 174:13-21
The catalyst performance and structure of Pt and Rh catalyst systems are studied for fresh catalysts and samples aged to mimic in-use catalyst performance. It was observed that both fresh Pt and Rh catalysts are highly active for three-way conversion
Publikováno v:
Le Journal de Physique Colloques. 51:C1-971
Publikováno v:
Microscopy and Microanalysis. 8:1150-1151
Autor:
Charles E. Lyman
Publikováno v:
Microscopy and Microanalysis. 3:869-870
Analysis of nanosize particles by x-ray emission spectrometry in the analytical electon microscope (AEM) is limited by the level of electron current that can be placed in a 1-2 nm excitation beam and by the consequent electron beam damage. The curren
Publikováno v:
Microscopy and Microanalysis. 3:1201-1202
Solid phase synthesis (SPS) is used for the discovery and optimization of biologically active substances for the pharmaceutical and agricultural industries. Large numbers of novel organic compounds are generated by successively adding functional grou
Publikováno v:
Proceedings, annual meeting, Electron Microscopy Society of America. 50:1660-1661
Conventional electron probe microanalysis (EPMA) requires solid, flat-polished specimens, and similarly prepared standards of known composition. Unfortunately, an increasing number of technologically important materials are particulate in nature and
Autor:
Charles E. Lyman, Kathleen B. Reuter
Publikováno v:
Proceedings, annual meeting, Electron Microscopy Society of America. 49:1016-1017
Determination of the location and quantity of poison or promoter elements on catalyst surfaces is an ideal application for the high spatial resolution available on the analytical electron microscope (AEM). However, these elements are often unstable u