Unprecedented high selectivity of n-hexane dehydroaromatization to benzene over metal-free phosphorus-doped activated carbon catalysts

2021 ◽  
Vol 57 (34) ◽  
pp. 4166-4169
Author(s):  
Yong Li ◽  
Shuhao Bao ◽  
Hong Zhao ◽  
Bing Feng ◽  
Siyuan Chen ◽  
...  
Keyword(s):  
Activated Carbon ◽  
High Selectivity ◽  
Selective Catalyst ◽  
Metal Free ◽  
Carbon Catalysts ◽  
Phosphorus Doped ◽  
First Time

Phosphorus-doped activated carbon is reported for the first time as a highly selective catalyst for n-hexane dehydroaromatization to benzene and hydrogen with 100% n-hexane conversion and 97% benzene selectivity.

A novel production of phase-divided jet-fuel-range hydrocarbons and phenol-enriched chemicals from catalytic co-pyrolysis of lignocellulosic biomass with low-density polyethylene over carbon catalysts

2020 ◽  
Vol 4 (7) ◽  
pp. 3687-3700
Author(s):  
Dengle Duan ◽  
Yayun Zhang ◽  
Hanwu Lei ◽  
Moriko Qian ◽  
Elmar Villota ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Lignocellulosic Biomass ◽  
Jet Fuel ◽  
Douglas Fir ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Carbon Catalysts ◽  
First Time

The catalytic co-pyrolysis of Douglas fir and low-density polyethylene with commercial activated carbon catalysts was investigated for the first time.

Nitrogen-Doped, Metal-Free Activated Carbon Catalysts for Aerobic Oxidation of Alcohols

ACS Catalysis ◽  
2015 ◽  
Vol 5 (5) ◽  
pp. 2886-2894 ◽  
Author(s):  
Hiroyuki Watanabe ◽  
Sayaka Asano ◽  
Shin-ichiro Fujita ◽  
Hiroshi Yoshida ◽  
Masahiko Arai
Keyword(s):  
Activated Carbon ◽  
Aerobic Oxidation ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Oxidation Of Alcohols ◽  
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.

Sulfonyl Radical Triggered Selective Iodosulfonylation and Bicycli-zations of 1,6-Dienes

2021 ◽  
Author(s):  
Shi-Ping Wu ◽  
Dong-Kai Wang ◽  
Qing-Qing Kang ◽  
Guo-Ping Ge ◽  
Hongxing Zheng ◽  
...  
Keyword(s):  
Functional Group ◽  
High Selectivity ◽  
Reaction Conditions ◽  
First Time

A novel sulfonyl radical triggered selective iodosulfonylation and bicyclizations of 1,6-dienes has been described for the first time. High selectivity and efficiency, mild reaction conditions, excellent functional group compatibility, and...

scholarly journals Metal-free porous phosphorus-doped g-C3N4 photocatalyst achieving efficient synthesis of benzoin

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12682-12686
Author(s):  
Yuanjin Li ◽  
Shuhui Wang ◽  
Jin Wu ◽  
Qiuyan Wang ◽  
Changqiu Ma ◽  
...  
Keyword(s):  
Benzyl Alcohol ◽  
Conversion Rate ◽  
Oxygen Activation ◽  
Superoxide Radicals ◽  
Efficient Synthesis ◽  
Metal Free ◽  
Phosphorus Doped

Porous phosphorus-doped g-C3N4 (PCNT) has intensive oxygen activation ability to generate superoxide radicals, and can efficiently catalyze synthesis of benzoin from benzyl alcohol, with conversion rate and selectivity near to 100%.

scholarly journals Phosphorus-doped activated carbon catalyst for n-hexane dehydroaromatization reaction

2021 ◽  
pp. 106318
Author(s):  
Yong Li ◽  
Hong Zhao ◽  
Siyuan Chen ◽  
Shuhao Bao ◽  
Feifei Xing ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Catalyst ◽  
Phosphorus Doped

scholarly journals Engineered Phage Endolysin Eliminates Gardnerella Biofilm without Damaging Beneficial Bacteria in Bacterial Vaginosis Ex Vivo

Pathogens ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 54
Author(s):  
Christine Landlinger ◽  
Lenka Tisakova ◽  
Vera Oberbauer ◽  
Timo Schwebs ◽  
Abbas Muhammad ◽  
...  
Keyword(s):  
Bacterial Vaginosis ◽  
Bactericidal Activity ◽  
High Selectivity ◽  
Ex Vivo ◽  
Vaginal Microbiome ◽  
Wild Type ◽  
Wild Type Enzyme ◽  
Promising Alternative ◽  
First Time

Bacterial vaginosis is characterized by an imbalance of the vaginal microbiome and a characteristic biofilm formed on the vaginal epithelium, which is initiated and dominated by Gardnerella bacteria, and is frequently refractory to antibiotic treatment. We investigated endolysins of the type 1,4-beta-N-acetylmuramidase encoded on Gardnerella prophages as an alternative treatment. When recombinantly expressed, these proteins demonstrated strong bactericidal activity against four different Gardnerella species. By domain shuffling, we generated several engineered endolysins with 10-fold higher bactericidal activity than any wild-type enzyme. When tested against a panel of 20 Gardnerella strains, the most active endolysin, called PM-477, showed minimum inhibitory concentrations of 0.13–8 µg/mL. PM-477 had no effect on beneficial lactobacilli or other species of vaginal bacteria. Furthermore, the efficacy of PM-477 was tested by fluorescence in situ hybridization on vaginal samples of fifteen patients with either first time or recurring bacterial vaginosis. In thirteen cases, PM-477 killed the Gardnerella bacteria and physically dissolved the biofilms without affecting the remaining vaginal microbiome. The high selectivity and effectiveness in eliminating Gardnerella, both in cultures of isolated strains as well as in clinically derived samples of natural polymicrobial biofilms, makes PM-477 a promising alternative to antibiotics for the treatment of bacterial vaginosis, especially in patients with frequent recurrence.

Potassium hydroxide as a novel catalyst for metal-free carbon nanotubes growth on powder activated carbon

2021 ◽  
pp. 413294
Author(s):  
Belal Abu Tarboush ◽  
Farouq S. Mjalli ◽  
Mohammed Abdulhakim Alsaadi ◽  
Mustafa Mohammed Aljumaily
Keyword(s):  
Carbon Nanotubes ◽  
Activated Carbon ◽  
Potassium Hydroxide ◽  
Free Carbon ◽  
Metal Free ◽  
Powder Activated Carbon ◽  
Novel Catalyst

Surface activated carbon nitride nanosheets with optimized electro-optical properties for highly efficient photocatalytic hydrogen production

2016 ◽  
Vol 4 (7) ◽  
pp. 2445-2452 ◽  
Author(s):  
Mohammad Ziaur Rahman ◽  
Jingrun Ran ◽  
Youhong Tang ◽  
Mietek Jaroniec ◽  
Shi Zhang Qiao
Keyword(s):  
Optical Properties ◽  
Activated Carbon ◽  
Hydrogen Production ◽  
Carbon Nitride ◽  
Surface Activation ◽  
Step Method ◽  
Highly Efficient ◽  
Thin Carbon ◽  
Carbon Nitride Nanosheets ◽  
First Time

We introduce a three-step method (co-polymerization, surface activation and exfoliation) for the first time to synthesize sub-nanometer-thin carbon nitride nanosheets as highly efficient hydrogen evolution photocatalysts.

Sign in / Sign up

Export Citation Format

Share Document