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Open Access Original Research

Catalytic Co-gasification of Lignites Blended with a Forest Residue under the Carbon Dioxide Stream

Despina Vamvuka and

Christia Loulashi

Received: 24 May 2022; Published: 29 September 2022; doi: 10.21926/cr.2203031

Abstract

The present study investigated the co-gasification of two different lignites blended with the forest residue collected from the land restoration activity sites of open-pit mines located in the region of the Ptolemais basin in North Greece performed under the carbon dioxide stream. All samples were d [...]

644 4314

Open Access Original Research

Effect of Microwave Radiation on the Development of a Porous Aluminum Carrier of the Active Mass of Catalysts in Heterogeneous Catalytic Reactions

Pari Muradova

Received: 24 June 2022; Published: 26 September 2022; doi: 10.21926/cr.2203030

Abstract

In this study, we prepared a fine-grained, aluminum-reinforced alumina support matrix of the active mass of catalysts, which showed activity in heterogeneous catalytic reactions stimulated by electromagnetic radiation in the microwave range. The support absorbed microwave radiation of 2. [...]

1020 5063

Open Access Review

Microbial Cyclodextrin Glycosyltransferases: Sources, Production, and Application in Cyclodextrin Synthesis

Kuldeep Saini ,

Vinay Mohan Pathak ,

Arpit Tyagi and

Rani Gupta

Received: 11 June 2022; Published: 22 September 2022; doi: 10.21926/cr.2203029

Abstract

Cyclodextrin glycosyltransferase (CGTase) is a multifunctional enzyme that hydrolyzes the α-glycosidic bond between two sugar molecules and synthesizes cyclodextrins (CDs) and other transglycosylation products. It is a ubiquitously present extracellular enzyme that offers the CG [...]

1396 11574

Open Access Original Research

Heterologous Expression, Characterization, and Comparison of Laccases from the White Rot Causing Basidiomycete Cerrena Unicolor

Le Thanh Mai Pham ,

Kai Deng ,

Trent R. Northen ,

Steven W. Singer ,

Paul D. Adams ,

Blake A. Simmons and

Kenneth L. Sale

Received: 26 July 2022; Published: 20 September 2022; doi: 10.21926/cr.2203028

Abstract

Lignin is the most abundant renewable source of aromatics on earth, and conversion of it to chemicals and fuels is needed to build an economically viable renewable biofuels industry. Biological routes to converting lignin to fuels and chemicals involve depolymerizing lignin using lignin-degrading en [...]

844 5759

Open Access Research Article

Effective Cu/ZnO/Al₂O₃ Catalyst for Methanol Production: Synthesis, Activation, Catalytic Performance, and Regeneration

Mikhail Kipnis ,

Elvira Volnina ,

Igor Belostotsky ,

Roman Galkin ,

Natalya Zhilyaeva ,

Ivan Levin ,

Sergey Kottsov and

Alexander Ezhov

Received: 09 September 2021; Published: 19 September 2022; doi: 10.21926/cr.2203027

Abstract

A precursor CuO/ZnO/Al₂O₃ catalyst for methanol synthesis has been prepared at room temperature by introducing a ternary salt solution into the excess of sodium carbonate solution following the reverse co-precipitatio [...]

1691 13433

Open Access Review

Design of Heterogeneous Catalysts for the Conversion of Furfural to C5 Derivatives: A Brief Review

Gabriel Santos Viana ,

Jorge Álef Estevam Lau Bomfim ,

Gabriel Pereira da Silva ,

José Faustino Souza de Carvalho Filho ,

Miriam Sanae Tokumoto ,

Fernando Cesário Rangel and

Rosenira Serpa da Cruz

Received: 30 June 2022; Published: 13 September 2022; doi: 10.21926/cr.2203026

Abstract

Technological development made in the field of biomass application allows synthesizing several high-value products, such as furfuraldehyde. Furfural, produced through sequential hydrolysis and dehydration reactions from biomass, is considered a platform molecule and a precursor of several other chem [...]

963 7971

Open Access Original Research

Removal of As(III) from Water by Cellulase Templated TiO₂: A Photocatalytic Oxidation Conjugated Adsorption Process

Jiaqiang Wang ,

Jiao He ,

Liang Jiang ,

Lulu Xie ,

Juanxue Kang and

Wei Wang

Received: 16 July 2022; Published: 09 September 2022; doi: 10.21926/cr.2203025

Abstract

TiO₂ photocatalyst was prepared using cellulase as a biotemplate through a hydrothermal process. The as-prepared catalyst was characterized based on physicochemical techniques and was used to remove As(III) from contaminated water. The cellulase templated TiO

601 4980

Open Access Original Research

Biochemical Characteristics and Healing Activity of Bromelia laciniosa Leaf Protease

Dafné Silva ,

Laís Nerys ,

Carlos Silva ,

Elizabeth Borba ,

Tonny Leite ,

Teresinha Silva and

Amanda Sena

Received: 27 May 2022; Published: 25 August 2022; doi: 10.21926/cr.2203024

Abstract

Macambira plant (Bromelia laciniosa Mart. Ex Shult. & Schult. f.) is a species belonging to the family Bromeliaceae, which is distributed widely in the hinterlands of northeastern Brazil

797 6769

Open Access Original Research

Fischer-Tropsch Synthesis on Co/SBA-15 Catalyst: Characterization and Oligomerization Modeling

Virginia M.R. Menezes ,

Gustavo M. Paula ,

Liliane A. Lima ,

Meiry G.F. Rodrigues and

Fabiano A.N. Fernandes

Received: 05 May 2022; Published: 16 August 2022; doi: 10.21926/cr.2203023

Abstract

In this study, we investigated the oligomerization mechanism of the Fischer-Tropsch synthesis catalyzed by a cobalt-based catalyst supported by SBA-15. The Co/SBA-15 catalyst contained 20% w/w of cobalt. It was prepared by the wet impregnation method and characterized by X-ray diffraction (XRD), N&l [...]

823 5579

Open Access Original Research

Degradation of Amido Black Dye Using Ultra-Violet Light Catalyzed by Iron Oxide Nanoparticles: Kinetics and Mechanism of Degradation

Olushola S. Ayanda ,

Cecilia C. Oforkansi ,

Omolola H. Aremu ,

Oluwakemi E. Ogunjemiluyi ,

Ololade L. Olowoyeye and

Cecilia O. Akintayo

Received: 26 June 2022; Published: 25 July 2022; doi: 10.21926/cr.2203022

Abstract

In this study, we investigated the degradation of amido black dye in an aqueous solution using ultra-violet (UV) light catalyzed by iron oxide nanoparticles (nano-Fe). The nano-Fe was synthesized by sodium borohydride reduction of ferric chloride solution and was characterized by scanning electron m [...]

803 5891