scholarly journals Solid acids with SO3H groups and tunable surface properties: versatile catalysts for biomass conversion

2014 ◽  
Vol 2 (30) ◽  
pp. 11813-11824 ◽  
Author(s):  
P. A. Russo ◽  
M. M. Antunes ◽  
P. Neves ◽  
P. V. Wiper ◽  
E. Fazio ◽  
...  
Keyword(s):  
Surface Properties ◽  
Solid Acid ◽  
Biomass Conversion ◽  
Porous Silica ◽  
Solid Acids ◽  
Solid Acid Catalysts ◽  
Acid Catalysts

Nanocomposites of SO3H-functionalized carbon/non-porous silica solid acid catalysts for the synthesis of useful bio-products.

A one building block approach for defect-enhanced conjugated microporous polymers: defect utilization for recyclable and catalytic biomass conversion

2018 ◽  
Vol 6 (32) ◽  
pp. 15553-15557 ◽  
Author(s):  
Kyoungil Cho ◽  
Sang Moon Lee ◽  
Hae Jin Kim ◽  
Yoon-Joo Ko ◽  
Seung Uk Son
Keyword(s):  
Building Block ◽  
Solid Acid ◽  
Biomass Conversion ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Microporous Polymers ◽  
Block Approach ◽  
Conjugated Microporous Polymers

A one building block approach for conjugated microporous polymers resulted in enhanced defects which were utilized for the development of solid acid catalysts.

Advancements in solid acid catalysts for biodiesel production

2014 ◽  
Vol 16 (6) ◽  
pp. 2934-2957 ◽  
Author(s):  
Fang Su ◽  
Yihang Guo
Keyword(s):  
Solid Acid ◽  
Solid Acids ◽  
Biodiesel Production ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Biodiesel Synthesis

Recent advancements in biodiesel synthesis catalyzed by solid acids, particularly novel hybrid organic–inorganic solid acids, are reviewed.

Nanoparticulate and microporous solid acid catalysts bearing aliphatic sulfonic acids for biomass conversion

2019 ◽  
Vol 55 (26) ◽  
pp. 3697-3700 ◽  
Author(s):  
Kyoungil Cho ◽  
Sang Moon Lee ◽  
Hae Jin Kim ◽  
Yoon-Joo Ko ◽  
Seung Uk Son
Keyword(s):  
Solid Acid ◽  
Biomass Conversion ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Sulfonic Acids

Nano-sized and microporous solid acid catalysts were developed for fructose conversion to HMF.

scholarly journals A New Method for Solid Acid Catalyst Evaluation for Cellulose Hydrolysis

2021 ◽  
Vol 2 (4) ◽  
pp. 645-669
Author(s):  
Maksim Tyufekchiev ◽  
Jordan Finzel ◽  
Ziyang Zhang ◽  
Wenwen Yao ◽  
Stephanie Sontgerath ◽  
...  
Keyword(s):  
Solid Acid ◽  
Reaction Pathway ◽  
Solid Acid Catalyst ◽  
False Negative ◽  
Acid Catalyst ◽  
Cellulose Hydrolysis ◽  
Solid Acids ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Supernatant Liquid

A systematic and structure-agnostic method for identifying heterogeneous activity of solid acids for catalyzing cellulose hydrolysis is presented. The basis of the method is preparation of a supernatant liquid by exposing the solid acid to reaction conditions and subsequent use of the supernatant liquid as a cellulose hydrolysis catalyst to determine the effects of in situ generated homogeneous acid species. The method was applied to representative solid acid catalysts, including polymer-based, carbonaceous, inorganic, and bifunctional materials. In all cases, supernatant liquids produced from these catalysts exhibited catalytic activity for cellulose hydrolysis. Direct comparison of the activity of the solid acid catalysts and their supernatants could not provide unambiguous detection of heterogeneous catalysis. A reaction pathway kinetic model was used to evaluate potential false-negative interpretation of the supernatant liquid test and to differentiate heterogeneous from homogeneous effects on cellulose hydrolysis. Lastly, differences in the supernatant liquids obtained in the presence and absence of cellulose were evaluated to understand possibility of false-positive interpretation, using structural evidence from the used catalysts to gain a fresh understanding of reactant–catalyst interactions. While many solid acid catalysts have been proposed for cellulose hydrolysis, to our knowledge, this is the first effort to attempt to differentiate the effects of heterogeneous and homogeneous activities. The resulting supernatant liquid method should be used in all future attempts to design and develop solid acids for cellulose hydrolysis.

Efficient, continuous N-Boc deprotection of amines using solid acid catalysts

2021 ◽  
Author(s):  
Jing Wu ◽  
Chunming Zheng ◽  
Bryan Li ◽  
Joel M. Hawkins ◽  
Susannah L. Scott
Keyword(s):  
Solid Acid ◽  
Solid Acids ◽  
Solid Acid Catalysts ◽  
Aliphatic Amines ◽  
Acid Catalysts ◽  
Aromatic And Aliphatic Amines

Rapid, catalytic N-Boc deprotection of aromatic and aliphatic amines is achieved using readily-available porous inorganic solid acids in flow.

Halloysite nanotubes based heterogeneous solid acid catalysts

2020 ◽  
Vol 44 (30) ◽  
pp. 12897-12908
Author(s):  
Aman Mahajan ◽  
Princy Gupta
Keyword(s):  
Acid Catalysis ◽  
Solid Acid ◽  
Catalytic Performance ◽  
Halloysite Nanotubes ◽  
Solid Acids ◽  
Review Article ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
Heterogeneous Solid ◽  
Excellent Catalytic Performance

Taking into account the excellent catalytic performance of halloysite nanotubes, the main focus of this review article is to unveil the research on halloysite nanotubes for the preparation of solid acids and their applications in acid catalysis.

Zirconia-Based Solid Acid Catalysts for Biomass Conversion

2021 ◽  
Author(s):  
Wenwen Zhang ◽  
Zichun Wang ◽  
Jun Huang ◽  
Yijiao Jiang
Keyword(s):  
Solid Acid ◽  
Biomass Conversion ◽  
Solid Acid Catalysts ◽  
Acid Catalysts

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.

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.

Sign in / Sign up

Export Citation Format

Share Document