Sulfonic Acid-Functionalized α-Zirconium Phosphate Single-Layer Nanosheets as a Strong Solid Acid for Heterogeneous Catalysis Applications

2014 ◽  
Vol 6 (10) ◽  
pp. 7417-7425 ◽  
Author(s):  
Yingjie Zhou ◽  
Rongcai Huang ◽  
Fuchuan Ding ◽  
Alex D. Brittain ◽  
Jingjing Liu ◽  
...  
Keyword(s):  
Heterogeneous Catalysis ◽  
Sulfonic Acid ◽  
Zirconium Phosphate ◽  
Solid Acid ◽  
Single Layer

Covalently immobilized ionic liquids on single layer nanosheets for heterogeneous catalysis applications

2017 ◽  
Vol 46 (38) ◽  
pp. 13126-13134 ◽  
Author(s):  
Yingjie Zhou ◽  
Jingjing Liu ◽  
Rongcai Huang ◽  
Meng Zhang ◽  
Min Xiao ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Heterogeneous Catalysis ◽  
Heterogeneous Catalyst ◽  
Zirconium Phosphate ◽  
Knoevenagel Condensation ◽  
Ethyl Cyanoacetate ◽  
Single Layer ◽  
Efficient Heterogeneous Catalyst

Covalently immobilized ionic liquids on sinlge layer α-zirconium phosphate nanosheets can serve as an efficient heterogeneous catalyst for various reactions, such as Knoevenagel condensation of benzaldehyde with ethyl cyanoacetate.

scholarly journals Solid Acid Catalyst Based on Single-Layer α-Zirconium Phosphate Nanosheets for Biodiesel Production via Esterification

Catalysts ◽  
2018 ◽  
Vol 8 (1) ◽  
pp. 17 ◽  
Author(s):  
Yingjie Zhou ◽  
Iman Noshadi ◽  
Hao Ding ◽  
Jingjing Liu ◽  
Richard Parnas ◽  
...  
Keyword(s):  
Zirconium Phosphate ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Single Layer ◽  
Acid Catalyst ◽  
Biodiesel Production

Sulfonic Acid-Functionalized α-Zirconium Phosphate Single-Layer Nanosheets for Catalysis and Fuel-Cell Applications

2016 ◽  
pp. 61-71
Author(s):  
Yingjie Zhou ◽  
Hang Hu ◽  
Rongcai Huang ◽  
Fuchuan Ding ◽  
Jingjing Liu ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Sulfonic Acid ◽  
Zirconium Phosphate ◽  
Single Layer

scholarly journals Pretreatment of Switchgrass for Production of Glucose via Sulfonic Acid-Impregnated Activated Carbon

Processes ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 504
Author(s):  
Yane Ansanay ◽  
Praveen Kolar ◽  
Ratna Sharma-Shivappa ◽  
Jay Cheng ◽  
Consuelo Arellano
Keyword(s):  
Activated Carbon ◽  
Sulfonic Acid ◽  
Solid Acid ◽  
Methanesulfonic Acid ◽  
Biofuel Production ◽  
Acid Catalysts ◽  
Effects Of Temperature ◽  
Carbon Catalysts ◽  
Hydrolysis Of

In the present research, activated carbon-supported sulfonic acid catalysts were synthesized and tested as pretreatment agents for the conversion of switchgrass into glucose. The catalysts were synthesized by reacting sulfuric acid, methanesulfonic acid, and p-toluenesulfonic acid with activated carbon. The characterization of catalysts suggested an increase in surface acidities, while surface area and pore volumes decreased because of sulfonation. Batch experiments were performed in 125 mL serum bottles to investigate the effects of temperature (30, 60, and 90 °C), reaction time (90 and 120 min) on the yields of glucose. Enzymatic hydrolysis of pretreated switchgrass using Ctec2 yielded up to 57.13% glucose. Durability tests indicated that sulfonic solid-impregnated carbon catalysts were able to maintain activity even after three cycles. From the results obtained, the solid acid catalysts appear to serve as effective pretreatment agents and can potentially reduce the use of conventional liquid acids and bases in biomass-into-biofuel production.

Engineering Modified Mesoporous Silica Catalysts through Porosity and Surface Acidity Control for Selective Production of DME

2021 ◽  
Vol 894 ◽  
pp. 45-49
Author(s):  
Rosanna Viscardi ◽  
Vincenzo Barbarossa ◽  
Raimondo Maggi ◽  
Francesco Pancrazzi
Keyword(s):  
Mesoporous Silica ◽  
Dimethyl Ether ◽  
Sulfonic Acid ◽  
Pore Diameter ◽  
Solid Acid ◽  
Surface Acidity ◽  
High Surface ◽  
High Surface Area ◽  
Bifunctional Catalysts ◽  
Scanning Electronic Microscopy

DME has been received the attention as a renewable energy due to its thermal efficiencies equivalent to diesel fuel, lower NOx emission, near-zero smoke and non-toxic. DME can be obtained by methanol dehydration over solid acid catalysts or directly from syngas over bifunctional catalysts. The catalytic dehydration of methanol to DME has been widely studied in the literature over pure or modified γ -aluminas (γ-Al2O3) and zeolites. Mesoporous silica has obtained much consideration due to its well-defined structural order, high surface area, and tunable pore diameter. In this work, sulfonic acid and aluminium modified mesoporous silica were synthesized and tested as catalysts for production of dimethyl ether from methanol. The modified silicas were studied utilizing XRD, N2 physisorption, pyridine adsorption, and scanning electronic microscopy. The effects of reaction temperature and water deactivation on the methanol selectivity and conversion to dimethyl ether were investigated. Sulfonic acid modified mesoporous silica showed higher selectivity and stability of DME than that of aluminosilicate. The grafting of mesoporous silica with sulfonic groups displayed much more enhanced hydrothermal stability than Al-MCM-41 and γ-Al2O3.

scholarly journals Efficient N-formylation of primary aromatic amines using novel solid acid magnetic nanocatalyst

RSC Advances ◽  
2020 ◽  
Vol 10 (67) ◽  
pp. 41229-41236
Author(s):  
Jitendra Kumar Yadav ◽  
Priyanka Yadav ◽  
Satish K. Awasthi ◽  
Alka Agarwal
Keyword(s):  
Magnetic Nanoparticles ◽  
Aromatic Amines ◽  
Sulfonic Acid ◽  
Solid Acid ◽  
Recyclable Catalyst ◽  
Primary Amines ◽  
Magnetic Nanocatalyst ◽  
Reaction Conditions ◽  
Primary Aromatic Amines ◽  
First Time

Sulfonic acid functionalized over biguanidine fabricated silica-coated heterogeneous magnetic nanoparticles (NP@SO3H) have been synthesized, well characterized and explored for the first time, as an efficient and recyclable catalyst for N-formylation of primary amines under mild reaction conditions.

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