scholarly journals Preparation and Characterization of Sulfonic Acid Type Cation Exchanger Based on Woody Biomass

2009 ◽  
Vol 66 (2) ◽  
pp. 69-74 ◽  
Author(s):  
Kazushi KUROKI ◽  
Toshiyuki MIYAUCHI ◽  
Norihisa ISHIKAWA ◽  
Atsuo TANAKA ◽  
Hidehiko MORI
Keyword(s):  
Sulfonic Acid ◽  
Cation Exchanger ◽  
Woody Biomass ◽  
Acid Type

scholarly journals Preparation and Characterization of Cation Exchanger Based on Woody Biomass Modified by Synthetic polymer

2007 ◽  
Vol 56 (1) ◽  
pp. 9-15 ◽  
Author(s):  
Toshiyuki MIYAUCHI ◽  
Kazushi KUROKI ◽  
Norihisa ISHIKAWA ◽  
Makoto TAKAHASHI ◽  
Hidehiko MORI
Keyword(s):  
Cation Exchanger ◽  
Woody Biomass ◽  
Synthetic Polymer

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.

Characterization of fine particulate matter generated in a large woody biomass-firing circulating fluid bed boiler

2021 ◽  
Vol 96 ◽  
pp. 11-18 ◽  
Author(s):  
Yishu Xu ◽  
Xiaowei Liu ◽  
Jiuxin Qi ◽  
Tianpeng Zhang ◽  
Jingying Xu ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Fine Particulate Matter ◽  
Woody Biomass ◽  
Fine Particulate ◽  
Fluid Bed

Thermo-Optical Properties of Perfluorinated Sulfonic Acid Membranes: An Investigation of Hydration Based on Absorption Spectra

2017 ◽  
Vol 71 (11) ◽  
pp. 2504-2511 ◽  
Author(s):  
Daniele T. Dias ◽  
Guy Lopes ◽  
Tales Ferreira ◽  
Ivanir L. Oliveira ◽  
Caroline D. Rosa
Keyword(s):  
Sulfonic Acid ◽  
Room Temperature ◽  
Water Retention ◽  
Structural Changes ◽  
Optical Characterization ◽  
Scanning Calorimetry ◽  
Experimental Procedure ◽  
Nafion Membranes ◽  
Perfluorinated Sulfonic Acid

The Nafion membranes are widely used in electrochemical applications such as fuel cells, chlor-alkali cells, and actuators–sensors. In this work, the thermal-optical characterization of Nafion in acid form was performed by photoacoustic spectroscopy, thermogravimetry, and differential scanning calorimetry. In the experimental procedure three distinct hydration levels were considered: (1) pristine membrane (λ ≅ H2O/–SO3H ≅ 5.6); (2) swelling process (λ ≅ 17.4); and (3) drying at controlled room temperature after swelling process (λ ≅ 6.5). The discovered behaviors showed significant irreversible structural changes induced by water retention in the membrane. These structural changes depend on the water population present in the clusters and also affect the directional thermal diffusivity of the membrane irreversibly.

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