Insights into the Hydrothermal Stability of ZSM-5 under Relevant Biomass Conversion Reaction Conditions

ACS Catalysis ◽  
2015 ◽  
Vol 5 (7) ◽  
pp. 4418-4422 ◽  
Author(s):  
David W. Gardner ◽  
Jiajie Huo ◽  
Thomas C. Hoff ◽  
Robert L. Johnson ◽  
Brent H. Shanks ◽  
...  
Keyword(s):  
Biomass Conversion ◽  
Hydrothermal Stability ◽  
Reaction Conditions ◽  
Conversion Reaction

Stability of Pd nanoparticles on carbon-coated supports under hydrothermal conditions

2018 ◽  
Vol 8 (4) ◽  
pp. 1151-1160 ◽  
Author(s):  
Jiajie Huo ◽  
Robert L. Johnson ◽  
Pu Duan ◽  
Hien N. Pham ◽  
Deyny Mendivelso-Perez ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Biomass Conversion ◽  
Pd Nanoparticles ◽  
Hydrothermal Stability ◽  
Hydrothermal Conditions ◽  
Carbon Coated

Hydrothermal stability is one of the major challenges facing heterogeneous catalysis in biomass conversion to chemicals or fuels.

scholarly journals Improved hydrothermal stability of Pd nanoparticles on nitrogen-doped carbon supports

2018 ◽  
Vol 8 (14) ◽  
pp. 3548-3561 ◽  
Author(s):  
Jiajie Huo ◽  
Pu Duan ◽  
Hien N. Pham ◽  
Yee Jher Chan ◽  
Abhaya K. Datye ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Biomass Conversion ◽  
Pd Nanoparticles ◽  
Hydrothermal Stability ◽  
Carbon Supports ◽  
Nitrogen Doped ◽  
Silica Supports ◽  
Nitrogen Doped Carbon

Carbon supports have been shown to provide better hydrothermal stability than alumina or silica supports, thus attracting more attention for aqueous-phase biomass conversion reactions.

Undecagold labeling of tRNA

1991 ◽  
Vol 49 ◽  
pp. 44-45
Author(s):  
James F. Hainfeld ◽  
Kyra M. Alford ◽  
Mathias Sprinzl ◽  
Valsan Mandiyan ◽  
Santa J. Tumminia ◽  
...  
Keyword(s):  
High Resolution ◽  
Transmission Electron Micrograph ◽  
Anticodon Loop ◽  
Electron Micrograph ◽  
Reaction Conditions ◽  
Scanning Transmission Electron ◽  
Transmission Electron ◽  
Scanning Transmission

The undecagold (Au11) cluster was used to covalently label tRNA molecules at two specific ribonucleotides, one at position 75, and one at position 32 near the anticodon loop. Two different Au11 derivatives were used, one with a monomaleimide and one with a monoiodacetamide to effect efficient reactions.The first tRNA labeled was yeast tRNAphe which had a 2-thiocytidine (s2C) enzymatically introduced at position 75. This was found to react with the iodoacetamide-Aun derivative (Fig. 1) but not the maleimide-Aun (Fig. 2). Reaction conditions were 37° for 16 hours. Addition of dimethylformamide (DMF) up to 70% made no improvement in the labeling yield. A high resolution scanning transmission electron micrograph (STEM) taken using the darkfield elastically scattered electrons is shown in Fig. 3.

Technologies for Biomass Conversion

2006 ◽  
Author(s):  
Felicia Bucura ◽  
Violeta Niculescu ◽  
Elena David ◽  
Claudia Sisu ◽  
Marius Constantinescum
Keyword(s):  
Biomass Conversion

Dimensionally-Controlled Hydrothermal Tm3+-doped Oxidic Nanocrystals and Their Photoluminescence Properties

2010 ◽  
Vol 1247 ◽  
Author(s):  
Rocío Calderón-Villajos ◽  
Carlos Zaldo ◽  
Concepción Cascales
Keyword(s):  
Single Crystals ◽  
Fluorescence Lifetimes ◽  
Photoluminescence Properties ◽  
Reaction Conditions ◽  
Hydrothermal Processes ◽  
Bulk Single Crystals ◽  
Template Free ◽  
Reaction Media

AbstractControlled reaction conditions in simple, template-free hydrothermal processes yield Tm-Lu2O3 and Tm-GdVO4 nanocrystals with well-defined specific morphologies and sizes. In both oxide families, nanocrystals prepared at pH 7 reaction media exhibit photoluminescence in ∼1.95 μm similar to bulk single crystals. For the lowest Tm3+ concentration (0.2 % mol) in GdVO4 measured 3H4 and 3F4 fluorescence lifetimes τ are very near to τrad.

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