scholarly journals Structural Effect of Nitrogen/Carbon on the Stability of Anchored Ru Catalysts for CO2 Hydrogenation to Formate

2021 ◽  
pp. 133571
Author(s):  
Ahsan Jaleel ◽  
Arsalan Haider ◽  
Canh Van Nguyen ◽  
Kyung Rok Lee ◽  
Seokhyun Choung ◽  
...  
Molecules ◽  
2018 ◽  
Vol 23 (8) ◽  
pp. 2007 ◽  
Author(s):  
Stefano Cattaneo ◽  
Hadi Naslhajian ◽  
Ferenc Somodi ◽  
Claudio Evangelisti ◽  
Alberto Villa ◽  
...  

We report the use of Ru catalysts supported in the activated carbon (AC) and carbon nanofibers (CNFs) for the selective production of liquid fuel dimethylfuran (DMF) and fuel additives alkoxymethyl furfurals (AMF). Parameters such as the reaction temperature and hydrogen pressure were firstly investigated in order to optimise the synthesis of the desired products. Simply by using a different support, the selectivity of the reaction drastically changed. DMF was produced with AC as support, while a high amount of AMF was produced when CNFs were employed. Moreover, the reusability of the catalysts was tested and deactivation phenomena were identified and properly addressed. Further studies need to be performed in order to optimise the stability of the catalysts.


2014 ◽  
Vol 38 (1) ◽  
pp. 25-55 ◽  
Author(s):  
Sorina Soare

Populist parties’ dazzling success has been registered in numerous new and old Member states for a while; populism has occupied a crucial position in Romanian politics since the onset of post-communism, with constant emphasis on the iconic role of the people in the democracy, the role of the leader in public statements and in the party’s organisation, the promotion of Manichean and simplistic solutions to the political/economic agenda, as well as the constant use of direct and emotional appeals, etc. Within this framework, the research question is: can Romanian populism be understood as a “temporary” problem of adjustment and adaptation, or is it a deeper structural effect, which requires further attention, considering its potential threats to the stability of the post-communist regime? Considering populism as a multi-faceted phenomenon that cannot be traced to a unique structure or a single/specific agency, the conclusions suggest the existence of an osmotic relationship between deep-rooted populism and democracy in Romania, in the sense that it is difficult to clearly identify which is the cause of the other. As such, the Romanian specificity stems from the constancy of this phenomenon and, above all, from its potential for contamination: populist cries become national mainstream catchwords.


1994 ◽  
Vol 10 (3) ◽  
pp. 375-378 ◽  
Author(s):  
Yoshihiro KUDO ◽  
Takeshi MIYAKAWA ◽  
Yasuyuki TAKEDA ◽  
Hiroaki MATSUDA ◽  
Kazuhisa HIRATANI

Catalysts ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 409 ◽  
Author(s):  
Constantine Tsounis ◽  
Yuan Wang ◽  
Hamidreza Arandiyan ◽  
Roong Jien Wong ◽  
Cui Ying Toe ◽  
...  

Herein, we demonstrate a method used to tune the selectivity of LaNiO3 (LNO) perovskite catalysts through the substitution of La with K cations. LNO perovskites were synthesised using a simple sol-gel method, which exhibited 100% selectivity towards the methanation of CO2 at all temperatures investigated. La cations were partially replaced by K cations to varying degrees via control of precursor metal concentration during synthesis. It was demonstrated that the reaction selectivity between CO2 methanation and the reverse water gas shift (rWGS) could be tuned depending on the initial amount of K substituted. Tuning the selectivity (i.e., ratio of CH4 and CO products) between these reactions has been shown to be beneficial for downstream hydrocarbon reforming, while valorizing waste CO2. Spectroscopic and temperature-controlled desorption characterizations show that K incorporation on the catalyst surface decrease the stability of C-based intermediates, promoting the desorption of CO formed via the rWGS prior to methanation.


2002 ◽  
Vol 378-381 ◽  
pp. 390-394
Author(s):  
H Goka ◽  
K Kubo ◽  
T Uefuji ◽  
M Fujita ◽  
K Yamada ◽  
...  

2007 ◽  
Vol 111 (27) ◽  
pp. 5988-5994 ◽  
Author(s):  
Soe Than ◽  
Hideaki Maeda ◽  
Maki Irie ◽  
Shuhei Itoh ◽  
Kiyoshi Kikukawa ◽  
...  

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