Search for: novel-catalysts
A novel highly dispersive magnetic nanocatalyst in water : Glucose as an efficient and green ligand for the immobilization of copper(II) for the cycloaddition of alkynes to azides, Article RSC Advances ; Volume 6, Issue 83 , 2016 , Pages 80234-80243 ; 20462069 (ISSN) ; Saberi, V ; Kalhor, S ; Ayati, S. E ; Sharif University of Technology
Royal Society of Chemistry
A new heterogeneous and highly dispersive nanocatalyst in water was prepared by the immobilization of Cu2+ onto glucose on Fe3O4. The catalyst was fully characterized by FT-IR, TGA, CHN, SEM, EDX, and atomic absorption spectroscopy. The synthesized catalyst was used in the synthesis of different derivatives of 1,2,3-triazole via a one-pot three-component reaction of alkynes, alkyl halides, and sodium azide. To the best of our knowledge, this novel catalyst adheres to the principles of green chemistry. The nanocatalyst could be recycled and reused in several runs without significant loss of activity
Two-stage thermocatalytic upgrading of fuel oil to olefins and fuels over a nanoporous hierarchical acidic catalyst, Article Petroleum Science and Technology ; Volume 37, Issue 16 , 2019 , Pages 1910-1916 ; 10916466 (ISSN) ; Shirvani, S ; Ghambarian, M ; Eidi, A ; Sharif University of Technology
Taylor and Francis Inc 2019
A two-stage thermocatalytic upgrading process using a novel catalyst was investigated to produce light olefins and liquid fuels from fuel oil. The upgraded oil from the first thermal stage demonstrated lower viscosity and higher crackability compared to the virgin feedstock. In the next step, the vapor-phase catalytic cracking of the upgraded fraction was implemented over a novel nanoporous composite catalyst, characterized by the XRD, FTIR, NH3- TPD, and N2 physisorption techniques. In total, more than 55 wt% of light olefins, particularly propylene (25.5 wt%) together with 25.4 wt% and 32.5 wt% of gasoline and diesel fuel were obtained in this process. © 2019, © 2019 Taylor & Francis...
Enhancement in reactivity via sulfidation of FeNi@BC for efficient removal of trichloroethylene: Insight mechanism and the role of reactive oxygen species, Article Science of the Total Environment ; Volume 794 , 2021 ; 00489697 (ISSN) ; Idrees, A ; Zaman, W. Q ; Abbas, Z ; Farooq, U ; Ali, M ; Yang, R ; Zeng, G ; Danish, M ; Gu, X ; Lyu, S ; Sharif University of Technology
Elsevier B.V 2021
A novel catalyst of sulfidated iron-nickel supported on biochar (S-FeNi@BC) was synthesized to activate persulfate (PS) for the removal of trichloroethylene (TCE). A number of techniques including XRD, SEM, TEM, FTIR, BET and EDS were employed to characterize S-FeNi@BC. The influence of sulfur to iron ratio (S/F) on TCE removal was investigated by batch experiments and a higher TCE removal (98.4%) was achieved at 0.22/1 ratio of S/F in the PS/S-FeNi@BC oxidation system. A dominant role in iron species conversion was noticed by the addition of sulfur in FeNi@BC system. Significant enhancement in recycling of the dissolved and surface Fe(II) was confirmed which contributed to the generation of...