Brønsted acid properties of hydrodesulfuriaztion catalysts for minimizing the loss of octane number: A DFT and microkinetic study

Meng Zheng ◽  
Jun Wei ◽  
Jingye Chen ◽  
Liang Zhao ◽  
Liyuan Cao ◽  
2021 ◽  
Sergio Rojas-Buzo ◽  
Benjamin Bohigues ◽  
Christian W. Lopes ◽  
Débora M. Meira ◽  
Mercedes Boronat ◽  

The Brønsted/Lewis acid properties of Hf-MOF-808 can be tuned by simply controlling the solvent employed in its synthesis, with direct catalytic implications on the activity and selectivity of organic reactions sensitive to the active site nature.

2010 ◽  
Vol 114 (36) ◽  
pp. 15464-15472 ◽  
Ningdong Feng ◽  
Anmin Zheng ◽  
Shing-Jong Huang ◽  
Hailu Zhang ◽  
Ningya Yu ◽  

2019 ◽  
Vol 330 ◽  
pp. 117-123 ◽  
Hongbao Shen ◽  
Ying Li ◽  
Shouying Huang ◽  
Kai Cai ◽  
Zaizhe Cheng ◽  

2017 ◽  
Vol 54 (1) ◽  
pp. 54-63 ◽  
Xu Li ◽  
Lan Wu ◽  
Qiong Tang ◽  
Jinxiang Dong

Mizzanoor Rahaman ◽  
M. Shahnawaz Ali ◽  
Khorshada Jahan ◽  
Damon Hinz ◽  
Jawad Bin Belayet ◽  

2021 ◽  
pp. 152751
Wenming Chen ◽  
Guifang Chen ◽  
Biao Wang ◽  
Wei Wang ◽  
Wei Huang ◽  

ACS Omega ◽  
2021 ◽  
Vol 6 (16) ◽  
pp. 10840-10858
Tushar M. Khopade ◽  
Kalyani Ajayan ◽  
Swapnil S. Joshi ◽  
Amy L. Lane ◽  
Rajesh Viswanathan

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 2015
Łukasz Kuterasiński ◽  
Małgorzata Smoliło-Utrata ◽  
Joanna Kaim ◽  
Wojciech Rojek ◽  
Jerzy Podobiński ◽  

The aim of the present paper is to study the speciation and the role of different active site types (copper species and Brønsted acid sites) in the direct synthesis of furan from furfural catalyzed by copper-exchanged FAU31 zeolite. Four series of samples were prepared by using different conditions of post-synthesis treatment, which exhibit none, one or two types of active sites. The catalysts were characterized by XRD, low-temperature sorption of nitrogen, SEM, H2-TPR, NMR and by means of IR spectroscopy with ammonia and CO sorption as probe molecules to assess the types of active sites. All catalyst underwent catalytic tests. The performed experiments allowed to propose the relation between the kind of active centers (Cu or Brønsted acid sites) and the type of detected products (2-metylfuran and furan) obtained in the studied reaction. It was found that the production of 2-methylfuran (in trace amounts) is determined by the presence of the redox-type centers, while the protonic acid sites are mainly responsible for the furan production and catalytic activity in the whole temperature range. All studied catalysts revealed very high susceptibility to coking due to polymerization of furfural.

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