Microcrystalline cellulose modified with Fe(II)– and Ni(II)–phthalocyanines: Syntheses, characterizations, and catalytic applications

Bahluli, Rana; Keshipour, Sajjad

doi:10.1016/j.poly.2019.05.010

Cited by 18 publications

(9 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Considering these advantages, Keshipour and Adak functionalized cellulose with d -penicillamine (DPA), an excellent linker and chelating agent for many transition metals, such as Fe, Mn, and Co cations, then anchored a Co(II) to form stable heterogenized Co(II) complex with excellent catalytic oxidation ability. Additionally, Bahluli and Keshipour chemically graft an enzyme mimics, Ni(II) and Fe(II) metallophthalocyanines on the surface of MCC via two steps: first step is Friedel–Crafts alkylation of the corresponding metal phthalocyanines with chloroacetic acid, in order to generate coordination sites on the metallophthalocyanines surface and the second step is the grafting of the metallophthalocyanines on the surface of MCC through esterification reaction as shown in Figure . The metallophthalocyanines are attractive oxidation catalysts characterized with chemical and thermal stability .…”

Section: Eb Oxidation In Heterogeneously Catalyzed Systemsmentioning

confidence: 99%

See 1 more Smart Citation

Selective Catalytic Oxidation of Ethylbenzene to Acetophenone: A Review of Catalyst Systems and Reaction Mechanisms

Azeez,

Nafiu,

Olarewaju

et al. 2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Acetophenone is an important chemical intermediate often employed in the production chain of many pharmaceuticals, agrochemicals, food, and cosmetic products. It is industrially produced as a byproduct of the Hock process. However, a growing demand for acetophenone has necessitated consideration of alternative production routes. The oxidation of ethylbenzene to acetophenone (OEB-A) is one of the most considered alternatives due to the low cost and availability of ethylbenzene (EB). The EB is one of the products of refinery downstream processes that is obtained from the xylene/EB isomerization unit. Although the OEB-A reaction is considered inexpensive, it has not been of great interest due to the inert behavior of C−H bond, relatively low acetophenone selectivity, and cumbersome separation strategies for extracting acetophenone from other reaction byproducts. In this Review, we discuss the recent advances in the OEB-A reaction covering both homogeneous and heterogeneous systems. Advances in catalyst design and development including ligand design and coordination strategies and tuning of support properties have, over the years, proven to be effective in increasing acetophenone selectivity during the OEB-A process. Exploring a single-atom catalyst's definitive active centers and high atom efficiency in the OEB-A reaction has demonstrated high-throughput results, even though not well harnessed due to the challenges of controlled synthesis of single-atom metal catalyst. Solvent-free, the OEB-A reaction has demonstrated to be attractive due to its ease of product collection and environmental friendliness. Green synthesis strategies such as metal-free OEB-A reaction and CO 2 -assisted OEB-A reaction have been reviewed. The CO 2 assisted OEB-A reaction has not received the desired attention, even though considerable improvement in catalytic performance was reported. Considering the importance of carbon circular economy and the ready availability of CO 2 , the CO 2 assisted OEB-A reaction could be an interesting research focus in the near future.

show abstract

Section: Eb Oxidation In Heterogeneously Catalyzed Systemsmentioning

confidence: 99%

Section: Eb Oxidation In Heterogeneously Catalyzed Systemsmentioning

confidence: 99%

Selective Catalytic Oxidation of Ethylbenzene to Acetophenone: A Review of Catalyst Systems and Reaction Mechanisms

Azeez,

Nafiu,

Olarewaju

et al. 2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…Biosourced microcrystalline cellulose (MCC) can be obtained from cheap and abundant natural cotton [125]. Phtalocyanines of Fe(II) and Ni(II) have been immobilized on MCC via chemical binding.…”

Section: Oxidationmentioning

confidence: 99%

Wood-Sourced Polymers as Support for Catalysis by Group 10 Transition Metals

et al. 2022

View full text Add to dashboard Cite

Despite providing interesting solutions to reduce the number of synthetic steps, to decrease energy consumption or to generate less waste, therefore contributing to a more sustainable way of producing important chemicals, the expansion of the use of homogeneous catalysis in industrial processes is hampered by several drawbacks. One of the most important is the difficulty to recycle the noble metals generating potential high costs and pollution of the synthesized products by metal traces detrimental to their applications. Supporting the metals on abundant and cheap biosourced polymers has recently appeared as an almost ideal solution: They are much easier to recover from the reaction medium and usually maintain high catalytic activity. The present bibliographical review focuses on the development of catalysts based on group 10 transition metals (nickel, palladium, platinum) supported on biopolymers obtained from wood, such as cellulose, hemicellulose, lignin, and their derivatives. The applications of these catalysts in organic synthesis or depollution are also addressed in this review with examples of C-C couplings, oxidation, or hydrogenation reactions.

show abstract

“…As a result, recent decade witnesses a great number of reports about MPc especially their applications as catalysts. Fe(II)-Pc is an active MPc that was employed in the oxidation of wide variety of organic substrates including β -isophorone 4 , catechol 5 , starch 6 , aromatic pollutant 7 , cyclohexene 8 , cyclohexane 9 , alcohols 10 , and methane 11 . The high activity of this catalyst is attributed to the large number of π electrons which are easily transported between the catalyst and substrate, similar to its analogue, Fe(II)-porphyrin 12 .…”

Section: Introductionmentioning

confidence: 99%

Fe(II)-phthalocyanine supported on chitosan aerogel as a catalyst for oxidation of alcohols and alkyl arenes

Azimi

Marjani

Keshipour

2021

Sci Rep

Self Cite

View full text Add to dashboard Cite

Manipulation of materials is considered as one of the eminent strategies to create desirable catalysts. In this regard, increasing surface area and decreasing dimensions of catalysts have been widely employed on account of effectiveness of these methods. Herein, aerogel form of chitosan as a sustainable, and high aspect ratio compound is employed as a green support for the catalytic purposes. Chitosan aerogel was modified with Fe(II)-phthalocyanine to produce a heterogeneous catalyst for oxidation reactions. The synthesized catalyst promoted the oxidation reactions of alcohols and alkyl arenes to the corresponding aldehydes and ketones using H2O2 as an oxidant in 24 h. The reactions for aliphatic and aromatic alcohols gave turnover numbers of 106–109 at 80 °C and 106–117 at room temperature, respectively. The oxidations of alkyl arenes were carried out with turnover numbers laying in the range of 106–117 at 100 °C. The low toxicity, inexpensive nature, and recycling possibility of the catalyst accompanied by the reaction mild conditions, clean oxidant, and excellent yields offer chitosan aerogel modified with Fe(II)-phthalocyanine as a promising catalyst for oxidation reactions.

show abstract

Microcrystalline cellulose modified with Fe(II)– and Ni(II)–phthalocyanines: Syntheses, characterizations, and catalytic applications

Cited by 18 publications

References 35 publications

Selective Catalytic Oxidation of Ethylbenzene to Acetophenone: A Review of Catalyst Systems and Reaction Mechanisms

Selective Catalytic Oxidation of Ethylbenzene to Acetophenone: A Review of Catalyst Systems and Reaction Mechanisms

Wood-Sourced Polymers as Support for Catalysis by Group 10 Transition Metals

Fe(II)-phthalocyanine supported on chitosan aerogel as a catalyst for oxidation of alcohols and alkyl arenes

Contact Info

Product

Resources

About