Sustainable Sorbitol Dehydration to Isosorbide using Solid Acid Catalysts: Transition from Batch Reactor to Continuous Flow System

ChemSusChem ◽  
2021 ◽  
Author(s):  
Francesco Brandi ◽  
Majd Al-Naji
Keyword(s):  
Continuous Flow ◽  
Solid Acid ◽  
Flow System ◽  
Batch Reactor ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Continuous Flow System

Highly efficient continuous-flow oxidative coupling of amines using promising nanoscale CeO2–M/SiO2 (M = MoO3 and WO3) solid acid catalysts

RSC Advances ◽  
2016 ◽  
Vol 6 (97) ◽  
pp. 95252-95262 ◽  
Author(s):  
Bolla Govinda Rao ◽  
Putla Sudarsanam ◽  
Baithy Mallesham ◽  
Benjaram M. Reddy
Keyword(s):  
Oxidative Coupling ◽  
Continuous Flow ◽  
Solid Acid ◽  
Catalytic Performance ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Highly Efficient

Nanoscale CeO2–MoO3/SiO2 solid acid shows an outstanding catalytic performance in the oxidative coupling of amines under industrially-favourable conditions.

Development of a continuous-flow tubular reactor for synthesis of 5-hydroxymethylfurfural from fructose using heterogeneous solid acid catalysts in biphasic reaction medium

2021 ◽  
Author(s):  
Sadra Souzanchi ◽  
Laleh Nazari ◽  
Kasanneni Tirumala Venkateswara Rao ◽  
Zhongshun Yuan ◽  
Zhongchao Tan ◽  
...  
Keyword(s):  
Continuous Flow ◽  
Solid Acid ◽  
Tubular Reactor ◽  
Reaction Medium ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Industrial Chemicals ◽  
Platform Chemical ◽  
Biphasic Reaction ◽  
Heterogeneous Solid

5-Hydroxymethylfurfural (5-HMF) is an important biomass-derived platform chemical used to produce polymers, biofuels and other valuable industrial chemicals. In this work, 5-HMF is synthesized from biomass-derived fructose through a continuous...

Preparation of Strong Acid Catalysts by Sulfate Treatment of Calcined Boehmite

1992 ◽  
Vol 57 (11) ◽  
pp. 2241-2247 ◽  
Author(s):  
Tomáš Hochmann ◽  
Karel Setínek
Keyword(s):  
Catalytic Activity ◽  
Surface Area ◽  
Aluminum Sulfate ◽  
Solid Acid ◽  
Strong Acid ◽  
Acid Strength ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Preparation Methods ◽  
Indicator Method

Solid acid catalysts with acid strength of -14.52 < H0 < -8.2 were prepared by sulfate treatment of the samples of boehmite calcined at 105-800 °C. Two preparation methods were used: impregnation of the calcined boehmite with 3.5 M H2SO4 or mixing of the boehmite samples with anhydrous aluminum sulfate, in both cases followed by calcination in nitrogen at 650 °C. The catalysts were characterized by measurements of surface area, adsorption of pyridine and benzene, acid strength measurements by the indicator method and by catalytic activity tests in the isomerization of cyclohexene, p-xylene and n-hexane. Properties of the catalysts prepared by both methods were comparable.

Effect of electroporation in a continuous flow system on bioaccumulation of magnesium, zinc and calcium ions in Lactobacillus rhamnosus B 442 cells

2021 ◽  
Vol 140 ◽  
pp. 107769
Author(s):  
Sujka Monika ◽  
Pankiewicz Urszula ◽  
Flisar Karel ◽  
Miklavčič Damijan ◽  
Haberl-Meglič Sasa
Keyword(s):  
Calcium Ions ◽  
Continuous Flow ◽  
Flow System ◽  
Lactobacillus Rhamnosus ◽  
Continuous Flow System

Developments of a continuous-flow system with immobilized biocatalysts towards sustainable bioprocessing

2021 ◽  
Author(s):  
Apisit Naramittanakul ◽  
Supacha Buttranon ◽  
A. Petchsuk ◽  
Pimchai Chaiyen ◽  
Nopphon Weeranoppanant
Keyword(s):  
Continuous Flow ◽  
Flow System ◽  
Continuous Flow System ◽  
P Immobilization ◽  
Feasible Solutions

Immobilization methods have emerged as feasible solutions for increasing the re-usability of biocatalysts, and for simplifying their separation from the desired products. Immobilized biocatalysts can directly be applied to a...

scholarly journals Metal–Organic Framework-Based Solid Acid Materials for Biomass Upgrade

2021 ◽  
Author(s):  
Yutian Qin ◽  
Jun Guo ◽  
Meiting Zhao
Keyword(s):  
High Efficiency ◽  
Solid Acid ◽  
Metal Organic Framework ◽  
Acid Sites ◽  
Solid Acid Catalysts ◽  
Future Research ◽  
Acid Catalysts ◽  
Metal Organic ◽  
Biomass Transformation ◽  
Organic Framework

AbstractBiomass is a green and producible source of energy and chemicals. Hence, developing high-efficiency catalysts for biomass utilization and transformation is urgently demanded. Metal–organic framework (MOF)-based solid acid materials have been considered as promising catalysts in biomass transformation. In this review, we first introduce the genre of Lewis acid and Brønsted acid sites commonly generated in MOFs or MOF-based composites. Then, the methods for the generation and adjustment of corresponding acid sites are overviewed. Next, the catalytic applications of MOF-based solid acid materials in various biomass transformation reactions are summarized and discussed. Furthermore, based on our personal insights, the challenges and outlook on the future development of MOF-based solid acid catalysts are provided. We hope that this review will provide an instructive roadmap for future research on MOFs and MOF-based composites for biomass transformation.

scholarly journals Nonthermal Plasma Induced Fabrication of Solid Acid Catalysts for Glycerol Dehydration to Acrolein

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 391
Author(s):  
Lu Liu ◽  
Xiaofei Philip Ye
Keyword(s):  
Solid Acid ◽  
Nonthermal Plasma ◽  
Temperature Programmed Desorption ◽  
Argon Atmosphere ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Pyridine Adsorption ◽  
X Ray ◽  
Glycerol Dehydration ◽  
Temperature Programmed

The feasibility of fabricating better solid acid catalysts using nonthermal plasma (NTP) technology for biobased acrolein production is demonstrated. NTP discharge exposure was integrated in catalyst fabrication in air or argon atmosphere. The fabricated catalysts were characterized by Brunauer–Emmett–Teller surface area analysis, temperature-programmed desorption of ammonia, X-ray powder diffraction and Fourier-transform infrared spectroscopy of pyridine adsorption, in comparison to regularly prepared catalysts as a control. Further, kinetic results collected via glycerol dehydration experiments were compared, and improvement in acrolein selectivity was displayed when the catalyst was fabricated in the argon NTP, but not in the air NTP. Possible mechanisms for the improvement were also discussed.

Advancements in solid acid catalysts for ecofriendly and economically viable synthesis of biodiesel

2010 ◽  
Vol 5 (1) ◽  
pp. 69-92 ◽  
Author(s):  
Yogesh C. Sharma ◽  
Bhaskar Singh ◽  
John Korstad
Keyword(s):  
Solid Acid ◽  
Solid Acid Catalysts ◽  
Acid Catalysts

scholarly journals Differential heat of adsorption of ammonia on hydrothermally treated solid acid catalysts and their catalytic activity.

1979 ◽  
Vol 22 (2) ◽  
pp. 67-72 ◽  
Author(s):  
Tatsuo MASUDA ◽  
Hitofumi TANIGUCHI ◽  
Kazuo TSUTSUMI ◽  
Hiroshi TAKAHASHI
Keyword(s):  
Catalytic Activity ◽  
Solid Acid ◽  
Heat Of Adsorption ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Differential Heat ◽  
Differential Heat Of Adsorption
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