by Sadeq Hamood Saleh Azzam  , Amreen Khanum  and Mohamed Afzal Pasha

Received: 30 September 2022;  Published: 15 February 2023;  doi: 10.21926/cr.2301007

2-Phenyl-4-arylmethylidene-5-oxazolinones were synthesized in very high yield by subjecting a mixture of an aryl aldehyde/heterocyclic aldehyde/cinnamaldehyde and hippuric acid in anhydrous acetic anhydride and catalytic Zn(OCOCH3)2·2H2O to ultrasonication at 35 KHz for 4 to 8 min. This method has many advantages: use of a green catalyst; yields are high, involves easy workup procedure, is energy efficient and economically feasible.

by Khac An DAO  , Hong Trang PHAM  and Van Vuong HOANG

Received: 01 September 2022;  Published: 31 January 2023;  doi: 10.21926/cr.2301006

Recently the GexOy nanomaterials have been studied intensively due to their interesting electronic materials, which have many particular properties and applications in nanotechnology and nano-devices fabrication. Much work has been done on many different synthesis methods and their properties of Ge and GexOy nanomaterials. However, the effects of the different Ge substrate surface states and Au catalyst layer thicknesses on the formation of different forms/morphologies of nanomaterials (nanowires, nanorods, nanopar [...]

by Jamylle Yanka Cruz Ribeiro  , Ronaldo Santos da Silva  , Giancarlo Richard Salazar-Banda  and Katlin Ivon Barrios Eguiluz

Received: 06 September 2022;  Published: 19 January 2023;  doi: 10.21926/cr.2301005

This paper describes the synthesis of Pd0.70-Nix-By nanoparticles (x:y = 0.30:0, 0:0.30, 0.25:0.05, 0.20:0.10, 0.15:0.15, and 0.10:0.20) supported on carbon Vulcan XC-72 R by the chemical reduction method using ethylene glycol as a reducing agent for the study of the electrochemical oxidation of ethanol in alkaline media. Neither surfactants nor templates were used during the syntheses. The catalysts were physically characterized by transmission electron microscopy that showed the formation of nanoparticles with di [...]

by Stamatia Spyrou  , Alexandra V. Chatzikonstantinou  , Archontoula Giannakopoulou  , Renia Fotiadou  , Silvia Priska  , Yannis V. Simos  , Aliki Tsakni  , Dimitrios Peschos  , Dimitra Houhoula  , Epaminondas Voutsas  and Haralambos Stamatis

Received: 01 December 2022;  Published: 19 January 2023;  doi: 10.21926/cr.2301004

Biomass derived from green marine macroalgae Ulva sp. is considered a rich source of bioactive compounds. In the present study, we demonstrate the increased bioactivity of a phenolic-rich extract derived from green marine macroalgae Ulva intestinalis after its treatment with fungal laccases from Trametes versicolor and Agaricus bisporus. The phenolic composition of the extract, before and after its enzymatic treatment, was determined through several analytical methods. Furthermore, the antioxidant, enzyme-inhibitor [...]

by Catalysis Research Editorial Office

Received: 04 January 2023;  Published: 04 January 2023;  doi: 10.21926/cr.2301003

The editors of Catalysis Research would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2022. We greatly appreciate the contribution of expert reviewers, which is crucial to the journal’s editorial process. We aim to recognize reviewer contributions through several mechanisms, of which the annual publication of reviewer names is one. Reviewers receive a voucher entitling them to a discount on their next LIDSEN publication and can download a certificate of recognition [...]

by Suman Lahkar  , Richa Brahma  and Swapan Kumar Dolui

Received: 15 September 2022;  Published: 04 January 2023;  doi: 10.21926/cr.2301002

The development of noble metal-free catalyst for hydrogen evolution reaction (HER) is the primary challenge in fuel production to replace fossil fuels. Here, we have synthesized Fe-doped TiO2/PANI nanocomposite via facile in situ polymerization method and studied its electrocatalytic activity towards HER. The composite catalyzes HER efficiently with an overpotential value of -180 mV vs. RHE in 0.5 M H2SO4 solution to achieve the current density of 10 mA cm-2 and also possesses unique stability of 8 h. However, a un [...]

by Carsten Unglaub  , Johannes Thiessen  and Andreas Jess

Received: 27 September 2022;  Published: 03 January 2023;  doi: 10.21926/cr.2301001

Fischer-Tropsch reactors operated in a steady state suffer from a low pore effectiveness factor and a high methane selectivity caused by internal mass transfer limitations due to the accumulation of long-chain hydrocarbons inside the catalyst pores. Therefore, an alternating process switching between Fischer-Tropsch synthesis (FTS) and drainage of the pores by hydrogenolysis is proposed. The periodical cracking of the accumulated waxes within the (partially) filled pores, realized by a switch from syngas (H2, CO) t [...]

by Otto V.M. Bueno  , Miguel A. San-Miguel  and Edison Z. da Silva

Received: 10 October 2022;  Published: 14 December 2022;  doi: 10.21926/cr.2204043

Linear atomic chain (LAC) gold nanowires (Au-NWs) containing oxygen impurities are materials that could be used as supports to stimulate chemical reactions. Its peculiar structural characteristics, such as abnormal Au-Au bonds, make it interesting to explore the chemical reactions of this material at a theoretical level. This work investigated the chemical reaction of ethanol supported on Au-NW containing two oxygen impurities. Using ab initio molecular dynamics simulations, it was shown that the presence of oxygen [...]

by Wei Wang  , Sa Bi  , Huanhuan Li  and Tiesheng Li

Received: 21 September 2022;  Published: 02 December 2022;  doi: 10.21926/cr.2204042

Fabrication, arrangement, and controllable composition of ordered organometallic films are critical for designing a highly active catalyst and investigating the catalytic mechanism. In this paper, an organometallic terpyridine Pd(II)/Ni(II) monolayer linked on the silicon substrate surface (denoted as Si-Tpy-Pd1/Ni1) was prepared and characterized using water contact angle, ultraviolet spectra, X-ray diffraction, scanning electron microscopy, and X-ray photoelectron microscopy. Si-Tpy-Pd1/Ni1 exhibited high catalyt [...]

by Oreste Piccolo  , Elisabetta Parodi  and Antonella Petri

Received: 14 September 2022;  Published: 17 November 2022;  doi: 10.21926/cr.2204041

In this study, a PoC (Proof of Concept) of a possible biomass valorization of flax and camelina oilseed press cakes was presented. Biocatalyzed hydrolysis of residual oils and proteins extracted from these wastes was studied. The biotransformation of oils was performed using commercial immobilized lipases, including Amano PS, Amano AK, and Candida Antarctica Lipase B (CALB). Acylglycerols were partially or fully hydrolyzed using Amano PS and AK. Triglycerides were not hydrolyzed by CALB, which behaved differently. [...]