Magnetic and Mössbauer Characterization of Iron—Zeolite and Iron and/or Ruthenium on Doped-Carbon Catalysts

1985 ◽  
pp. 498-517 ◽  
Author(s):  
L. N. Mulay ◽  
Thomas Pannaparayil
Keyword(s):  
Carbon Catalysts

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.

ChemInform Abstract: CHARACTERIZATION OF NITROGEN-CONTAINING ACTIVE CARBON CATALYSTS FOR SULFUR DIOXIDE REMOVAL

1982 ◽  
Vol 13 (48) ◽  
Author(s):  
A. NISHIJIMA ◽  
H. HAGIWARA ◽  
M. KURITA ◽  
A. UENO ◽  
T. SATO ◽  
...  
Keyword(s):  
Sulfur Dioxide ◽  
Active Carbon ◽  
Abstract Characterization ◽  
Sulfur Dioxide Removal ◽  
Carbon Catalysts

Synthesis and characterization of sulfonated carbon catalysts derived from biomass waste and its evaluation in glycerol acetylation

2020 ◽  
Author(s):  
Usman Idris Nda-Umar ◽  
Irmawati Ramli ◽  
Ernee Noryana Muhamad ◽  
Yun Hin Taufiq-Yap ◽  
Norsahida Azri
Keyword(s):  
Synthesis And Characterization ◽  
Biomass Waste ◽  
Carbon Catalysts

scholarly journals Characterization of Nitrogen-containing Active Carbon Catalysts for SO2Removal

1982 ◽  
Vol 55 (8) ◽  
pp. 2618-2621 ◽  
Author(s):  
Akio Nishijima ◽  
Hiroyuki Hagiwara ◽  
Minoru Kurita ◽  
Akifumi Ueno ◽  
Toshio Sato ◽  
...  
Keyword(s):  
Active Carbon ◽  
Carbon Catalysts

Characterization of CuCl2/PdCl2/Activated Carbon Catalysts for the Synthesis of Diethyl Carbonate

2002 ◽  
Vol 16 (1) ◽  
pp. 182-188 ◽  
Author(s):  
A. Punnoose ◽  
M. S. Seehra ◽  
B. C. Dunn ◽  
E. M. Eyring
Keyword(s):  
Activated Carbon ◽  
Diethyl Carbonate ◽  
Carbon Catalysts

scholarly journals Characterization of Active Sites on Carbon Catalysts

2007 ◽  
Vol 46 (12) ◽  
pp. 4110-4115 ◽  
Author(s):  
José L. Figueiredo ◽  
Manuel F. R. Pereira ◽  
Maria M. A. Freitas ◽  
José J. M. Órfão
Keyword(s):  
Active Sites ◽  
Carbon Catalysts

Morphological Characterization of Mycobacteriophage R1

1974 ◽  
Vol 32 ◽  
pp. 254-255
Author(s):  
B. L. Soloff ◽  
T. A. Rado
Keyword(s):  
Carbon Source ◽  
Stationary Phase ◽  
Growth Phase ◽  
Minimal Medium ◽  
Morphological Characterization ◽  
Logarithmic Growth Phase ◽  
Complete Lysis ◽  
Lysogenic Culture ◽  
Logarithmic Growth

Mycobacteriophage R1 was originally isolated from a lysogenic culture of M. butyricum. The virus was propagated on a leucine-requiring derivative of M. smegmatis, 607 leu−, isolated by nitrosoguanidine mutagenesis of typestrain ATCC 607. Growth was accomplished in a minimal medium containing glycerol and glucose as carbon source and enriched by the addition of 80 μg/ ml L-leucine. Bacteria in early logarithmic growth phase were infected with virus at a multiplicity of 5, and incubated with aeration for 8 hours. The partially lysed suspension was diluted 1:10 in growth medium and incubated for a further 8 hours. This permitted stationary phase cells to re-enter logarithmic growth and resulted in complete lysis of the culture.

AEM analysis of crystallization in Ti-based amorphous alloys

1983 ◽  
Vol 41 ◽  
pp. 270-271
Author(s):  
A.R. Pelton ◽  
A.F. Marshall ◽  
Y.S. Lee
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Amorphous Materials ◽  
Isothermal Annealing ◽  
Amorphous Matrix ◽  
Nucleation And Growth ◽  
Current Interest ◽  
Amorphous Films ◽  
Electrical And Magnetic Properties

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.

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