Insight into the enhanced activity of Ag/NiOx-MnO2 for catalytic oxidation of o-xylene at low temperatures

2019 ◽  
Vol 479 ◽  
pp. 1262-1269 ◽  
Author(s):  
Yinsu Wu ◽  
Sa Shi ◽  
Shusheng Yuan ◽  
Tong Bai ◽  
Shengtao Xing
Keyword(s):  
Catalytic Oxidation ◽  
Low Temperatures ◽  
Enhanced Activity ◽  
Insight Into

New insight into the enhanced activity of ordered mesoporous nickel oxide in formaldehyde catalytic oxidation reactions

2018 ◽  
Vol 361 ◽  
pp. 370-383 ◽  
Author(s):  
Hongchao Wang ◽  
Weiqi Guo ◽  
Zhi Jiang ◽  
Ruoou Yang ◽  
Zheng Jiang ◽  
...  
Keyword(s):  
Nickel Oxide ◽  
Catalytic Oxidation ◽  
Oxidation Reactions ◽  
Enhanced Activity ◽  
Ordered Mesoporous ◽  
Insight Into

Desiccation and low temperature attenuate the effect of UVC254 nm in the photobiont of the astrobiologically relevant lichens Circinaria gyrosa and Buellia frigida

2014 ◽  
Vol 14 (3) ◽  
pp. 479-488 ◽  
Author(s):  
T. Backhaus ◽  
R. de la Torre ◽  
K. Lyhme ◽  
J.-P. de Vera ◽  
J. Meeßen
Keyword(s):  
Low Temperature ◽  
Low Temperatures ◽  
Photosynthetic Activity ◽  
Real Space ◽  
Fast Recovery ◽  
Protective Mechanisms ◽  
Subzero Temperatures ◽  
High Viability ◽  
Buellia Frigida ◽  
Insight Into

AbstractSeveral investigations on lichen photobionts (PBs) after exposure to simulated or real-space parameters consistently reported high viability and recovery of photosynthetic activity. These studies focused on PBs within lichen thalli, mostly exposed in a metabolically inactive state. In contrast, a recent study exposed isolated and metabolically active PBs to the non-terrestrial stressor UVC254 nm and found strong impairment of photosynthetic activity and photo-protective mechanisms (Meeßen et al. in 2014b). Under space and Mars conditions, UVC is accompanied by other stressors as extreme desiccation and low temperatures. The present study exposed the PBs of Buellia frigida and Circinaria gyrosa, to UVC in combination with desiccation and subzero temperatures to gain better insight into the combined stressors' effect and the PBs' inherent potential of resistance. These effects were examined by chlorophyll a fluorescence which is a good indicator of photosynthetic activity (Lüttge & Büdel in 2010) and widely used to test the viability of PBs after (simulated) space exposure. The present results reveal fast recovery of photosynthetic activity after desiccation and subzero temperatures. Moreover, they demonstrate that desiccation and cold confer an additional protective effect on the investigated PBs and attenuate the PBs' reaction to another stressor – even if it is a non-terrestrial one such as UVC. Besides other protective mechanisms (anhydrobiosis, morphological–anatomical traits and secondary lichen compounds), these findings may help to explain the high resistance of lichens observed in astrobiological studies.

An atomic-level insight into the basic mechanism responsible for the enhancement of the catalytic oxidation of carbon monoxide on a Cu/CeO2 surface

2017 ◽  
Vol 19 (5) ◽  
pp. 3498-3505 ◽  
Author(s):  
Kenichi Koizumi ◽  
Katsuyuki Nobusada ◽  
Mauro Boero
Keyword(s):  
Carbon Monoxide ◽  
Reaction Mechanism ◽  
Catalytic Oxidation ◽  
Morphological Changes ◽  
Basic Mechanism ◽  
Atomic Level ◽  
Insight Into ◽  
Oxidation Of Carbon Monoxide

Reaction mechanism of CO molecules onto a Cu/CeO2 surface and morphological changes.

Radical Type Catalytic Oxidation of Butane at Low Temperatures overin-situPrepared Silica Species

1997 ◽  
Vol 26 (10) ◽  
pp. 1051-1052 ◽  
Author(s):  
Atsushi Satsuma ◽  
Naruaki Sugiyama ◽  
Yuichi Kamiya ◽  
Tadashi Hattori
Keyword(s):  
Catalytic Oxidation ◽  
Low Temperatures ◽  
Radical Type

Catalytic oxidation and hydrolysis of HCN over LaxCuy/TiO2 catalysts at low temperatures

2019 ◽  
Vol 282 ◽  
pp. 260-268 ◽  
Author(s):  
Qi Wang ◽  
Xueqian Wang ◽  
Langlang Wang ◽  
Yanan Hu ◽  
Ping Ning ◽  
...  
Keyword(s):  
Catalytic Oxidation ◽  
Low Temperatures ◽  
Hydrolysis Of

scholarly journals Catalytic Oxidation of Methane to Oxygenated Products: Recent Advancements and Prospects for Electrocatalytic and Photocatalytic Conversion at Low Temperatures

2020 ◽  
Vol 7 (23) ◽  
pp. 2001946
Author(s):  
Md. Selim Arif Sher Shah ◽  
Cheoulwoo Oh ◽  
Hyesung Park ◽  
Yun Jeong Hwang ◽  
Ming Ma ◽  
...  
Keyword(s):  
Catalytic Oxidation ◽  
Low Temperatures ◽  
Oxidation Of Methane ◽  
Oxygenated Products
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