Catalytic oxidation of primary and secondary alcohols over a novel TCPP/Zn–Fe2O4@ZnO catalyst

RSC Advances ◽  
2015 ◽  
Vol 5 (121) ◽  
pp. 99640-99645 ◽  
Author(s):  
Mahdi Heidari-Golafzani ◽  
Mahboubeh Rabbani ◽  
Rahmatollah Rahimi ◽  
Alireza Azad
Keyword(s):  
Catalytic Activity ◽  
Catalytic Oxidation ◽  
Heterogeneous Catalyst ◽  
High Efficiency ◽  
Secondary Alcohols

The catalytic activity of TCPP/Zn–Fe2O4@ZnO as a recyclable and high efficiency heterogeneous catalyst for oxidation of primary and secondary alcohols using H2O2as a green oxidant under reflux conditions in CH3CN was investigated.

scholarly journals Facile One-Step Fabrication of Phthalocyanine–Graphene–Bacterial–Cellulose Nanocomposite with Superior Catalytic Performance

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1673
Author(s):  
Qiulin Hong ◽  
Shiliang Chen
Keyword(s):  
Catalytic Activity ◽  
Bacterial Cellulose ◽  
Catalytic Oxidation ◽  
Heterogeneous Catalyst ◽  
Photoelectron Spectroscopy ◽  
Density Functional ◽  
Oxidation Mechanism ◽  
Hierarchical Architecture ◽  
Metal Phthalocyanine ◽  
Reactive Metal

It is generally accepted that the convenient fabrication of a metal phthalocyanine-based heterogeneous catalyst with superior catalytic activity is crucial for its application. Herein, a novel and versatile ultrasonic-assisted biosynthesis approach (conducting ultrasonic treatment during biosynthesis process) was tactfully adopted for the direct immobilization of a sulfonated cobalt phthalocyanine (PcS) catalyst onto a graphene–bacterial cellulose (GBC) substrate without any modification. The prepared phthalocyanine–graphene–bacterial–cellulose nanocomposite, PcS@GBC, was characterized by field emission scanning electron microscope (FESEM) and X-ray photoelectron spectroscopy (XPS). The catalytic activity of the PcS@GBC was evaluated based on its catalytic oxidation performance to dye solution, with H2O2 used as an oxidant. More than a 140% increase of dye removal percentage for the PcS@GBC heterogeneous catalyst was found compared with that of PcS. The unique hierarchical architecture of the GBC substrate and the strong interaction between PcS and graphene, which were verified experimentally by ultraviolet-visible light spectroscopy (UV-vis) and Fourier transform infrared spectroscopy (FT-IR) and theoretically by density functional theory (DFT) calculation, were synergistically responsible for the substantial enhancement of catalytic activity. The accelerated formation of the highly reactive hydroxyl radical (·OH) for PcS@GBC was directly evidenced by the electron paramagnetic resonance (EPR) spin-trapping technique. A possible catalytic oxidation mechanism for the PcS@GBC–H2O2 system was illustrated. This work provides a new insight into the design and construction of a highly reactive metal phthalocyanine-based catalyst, and the practical application of this functional nanomaterial in the field of environmental purification is also promising.

scholarly journals Waste Animal Bones as Catalysts for Biodiesel Production; A Mini Review

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 630
Author(s):  
Fayaz Hussain ◽  
Saad Alshahrani ◽  
Muhammad Mujtaba Abbas ◽  
Haris Mahmood Khan ◽  
Asif Jamil ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalyst ◽  
Recent Literature ◽  
Catalyst Preparation ◽  
Biodiesel Production ◽  
Waste Generation ◽  
Preparation Methods ◽  
Eu Legislation ◽  
Animal Bones ◽  
Disposal Cost

Slaughterhouse waste is considered to be an emerging issue because of its disposal cost. As an alternative, it would be a great prospect for the bioeconomy society to explore new usages of these leftover materials. As per food safety rules mentioned by EU legislation, all bone waste generated by slaughterhouses ought to be disposed of by rendering. The huge quantity of worldwide bone waste generation (130 billion kilograms per annum) is an environmental burden if not properly managed. The waste animal bones can be efficiently employed as a heterogeneous catalyst to produce biodiesel. This mini review summarized the recent literature reported for biodiesel generation using waste animal bones derived heterogeneous catalyst. It discusses the sources of bone waste, catalyst preparation methods, particularly calcination and its effects, and important characteristics of bones derived catalyst. It suggests that catalysts extracted from waste animal bones have suitable catalytic activity in transesterification of different oil sources to generate a good quality biodiesel.

scholarly journals Immobilization of an Iridium(I)-NHC-Phosphine Catalyst for Hydrogenation Reactions under Batch and Flow Conditions

Catalysts ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 656
Author(s):  
Henrietta Kovács ◽  
Krisztina Orosz ◽  
Gábor Papp ◽  
Ferenc Joó ◽  
Henrietta Horváth
Keyword(s):  
Catalytic Activity ◽  
Ion Exchange ◽  
Heterogeneous Catalyst ◽  
Aqueous Phase ◽  
Levulinic Acid ◽  
Flow Reactor ◽  
High Catalytic Activity ◽  
Flow Conditions ◽  
Hydrogenation Reactions ◽  
Excellent Selectivity

Na2[Ir(cod)(emim)(mtppts)] (1) with high catalytic activity in various organic- and aqueous-phase hydrogenation reactions was immobilized on several types of commercially available ion-exchange supports. The resulting heterogeneous catalyst was investigated in batch reactions and in an H-Cube flow reactor in the hydrogenation of phenylacetylene, diphenylacetylene, 1-hexyne, and benzylideneacetone. Under proper conditions, the catalyst was highly selective in the hydrogenation of alkynes to alkenes, and demonstrated excellent selectivity in C=C over C=O hydrogenation; furthermore, it displayed remarkable stability. Activity of 1 in hydrogenation of levulinic acid to γ-valerolactone was also assessed.

A copper nitride catalyst for the efficient hydroxylation of aryl halides under ligand-free conditions

2021 ◽  
Author(s):  
Hang Xu ◽  
Sho Yamaguchi ◽  
Takato Mitsudome ◽  
Tomoo Mizugaki
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalyst ◽  
Aryl Halides ◽  
High Catalytic Activity ◽  
Copper Nitride ◽  
Ligand Free

Copper nitride (Cu3N) was used as a heterogeneous catalyst for the hydroxylation of aryl halides under ligand-free conditions. The cubic Cu3N nanoparticles showed high catalytic activity, comparable to those of...

scholarly journals A new highly active La2O3–CuO–MgO catalyst for the synthesis of cumyl peroxide by catalytic oxidation

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12532-12542
Author(s):  
HanShuang Liu ◽  
KaiJun Wang ◽  
XiaoYan Cao ◽  
JiaXin Su ◽  
Zhenggui Gu
Keyword(s):  
Catalytic Activity ◽  
Catalytic Oxidation ◽  
Highly Active

The La2O3–CuO–MgO catalyst acts on the oxidation of cumene and shows excellent catalytic activity through the coordination of surface and interior.

Industrial resin “INDION 130” modified with vanadyl cations as highly efficient heterogeneous catalyst for epoxidation of fatty compounds with TBHP as oxidant

2015 ◽  
Vol 39 (8) ◽  
pp. 5960-5965 ◽  
Author(s):  
Praveen K. Khatri ◽  
Mounika Aila ◽  
Jyoti Porwal ◽  
Savita Kaul ◽  
Suman L. Jain
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalyst ◽  
Cation Exchanger ◽  
Vanadium Catalyst ◽  
Highly Efficient ◽  
Efficient Heterogeneous Catalyst

Cation exchanger INDION 130 modified with vanadyl cations was found to be readily prepared and reusable and exhibited higher catalytic activity than the homogeneous oxo-vanadium catalyst for epoxidation of fatty compounds.

scholarly journals Low platinum alloy catalyst PtCo3 obtaining high catalytic activity and stability with great water and CO2 resistance for catalytic oxidation of toluene

Fuel ◽  
2022 ◽  
Vol 307 ◽  
pp. 121794
Author(s):  
Jianwu Zou ◽  
Yankun Du ◽  
Rongjia Fang ◽  
Xiaoshuang Duan ◽  
Yangjia Liu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Catalytic Oxidation ◽  
High Catalytic Activity ◽  
Platinum Alloy ◽  
Alloy Catalyst

scholarly journals High-efficiency catalytic performance over mesoporous Ni/beta zeolite for the synthesis of quinoline from glycerol and aniline

RSC Advances ◽  
2017 ◽  
Vol 7 (16) ◽  
pp. 9551-9561 ◽  
Author(s):  
An Li ◽  
Chen Huang ◽  
Cai-Wu Luo ◽  
Wen-Jun Yi ◽  
Zi-Sheng Chao
Keyword(s):  
Catalytic Activity ◽  
Vapor Phase ◽  
High Efficiency ◽  
Zeolite Catalyst ◽  
Catalytic Performance ◽  
Beta Zeolite ◽  
Phase Process

Quinoline was synthesized via the typical Skraup approach with a vapor-phase process. The mesoporous Ni/beta zeolite catalyst exhibited high-efficiency catalytic activity and an enhanced ability of anti-deactivation.

High yield and greener C–H difluoromethylation reactions using copper iodide nanoparticles/boron nitride nanosheets as a versatile and recyclable heterogeneous catalyst

2021 ◽  
Author(s):  
Udayakumar Veerabagu ◽  
Gowsika Jaikumar ◽  
Fushen Lu ◽  
Franck Quero
Keyword(s):  
Boron Nitride ◽  
Heterogeneous Catalyst ◽  
High Efficiency ◽  
High Yield ◽  
Copper Iodide ◽  
Boron Nitride Nanosheets ◽  
Greener Synthesis ◽  
High Yields ◽  
Recyclable Heterogeneous Catalyst

The 3 wt% CuI/BNNS catalyst exhibited high efficiency for C–H difluoromethylation reactions and enabled greener synthesis at high yields using cyrene as a solvent. Furthermore, the catalyst could be easily recovered and recycled for at least five cycles.

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