Defective graphene@diamond hybrid nanocarbon material as an effective and stable metal-free catalyst for acetylene hydrochlorination

2019 ◽  
Vol 55 (10) ◽  
pp. 1430-1433 ◽  
Author(s):  
Guojun Lan ◽  
Yiyang Qiu ◽  
Jiangtao Fan ◽  
Xiaolong Wang ◽  
Haodong Tang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hybrid Material ◽  
Surface Defects ◽  
Acetylene Hydrochlorination ◽  
Metal Free ◽  
Nanocarbon Material ◽  
Defective Graphene

The nanodiamond–graphene hybrid material (ND@G) exhibits superior catalytic activity comparable to Au/C catalysts due to abundant surface defects.

Nitrogen-doped active carbon as a metal-free catalyst for acetylene hydrochlorination

RSC Advances ◽  
2015 ◽  
Vol 5 (10) ◽  
pp. 7461-7468 ◽  
Author(s):  
Chunli Zhang ◽  
Lihua Kang ◽  
Mingyuan Zhu ◽  
Bin Dai
Keyword(s):  
Catalytic Activity ◽  
High Temperature ◽  
Active Carbon ◽  
Post Treatment ◽  
High Catalytic Activity ◽  
Acetylene Hydrochlorination ◽  
Nitrogen Doped ◽  
Metal Free

In this study, we report high catalytic activity for acetylene hydrochlorination by post-treatment of active carbon (AC) with polyaniline (PANI) followed by pyrolyzation at high temperature.

Non-mercury catalytic acetylene hydrochlorination over Ru catalysts enhanced by carbon nanotubes

RSC Advances ◽  
2015 ◽  
Vol 5 (12) ◽  
pp. 9002-9008 ◽  
Author(s):  
Guangbi Li ◽  
Wei Li ◽  
Haiyang Zhang ◽  
Yanfeng Pu ◽  
Mengxia Sun ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Catalytic Activity ◽  
Acetylene Hydrochlorination ◽  
Ru Catalysts ◽  
Inner Diameter

Ru catalysts deposited inside the channels of the CNTs show higher catalytic activity. Ru-in-CNT catalyst exhibited an acetylene conversion of 95.0% at 170 °C and 10 h. CNTs with an inner diameter of 3–7 nm can functionalize as an efficient support.

scholarly journals Synergy between Ionic Liquids and CuCl2 in Gas–Liquid Phase Reactions of Acetylene Hydrochlorination

Catalysts ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 504 ◽  
Author(s):  
Yi Yu ◽  
Yuxue Yue ◽  
Bolin Wang ◽  
Haihua He ◽  
Zhong-Ting Hu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Ionic Liquids ◽  
Activated Carbon ◽  
Liquid Phase ◽  
Dft Calculations ◽  
Synergetic Effect ◽  
Good Explanation ◽  
Experimental Results ◽  
Acetylene Hydrochlorination ◽  
Reaction Media

We studied the acetylene hydrochlorination in gas–liquid phase reactions using ionic liquids (IL) as the reaction media and CuCl2 as the catalyst. The Cu-IL catalyst showed strong synergy between the IL and the Cu(II) active catalytic species. For [PrMIm]Cl, the Cu-IL catalyst exhibited significant enhancement of the catalytic activity in comparison with the CuCl2 catalyst supported on activated carbon and the IL alone as the catalyst. We have also performed DFT calculations of the reaction process, which provides a good explanation of our experimental results and for the synergetic effect. Our result suggests that ILs may be used to improve the activity of other metallic catalysts for the hydrochlorination reaction of acetylene.

Converting chicken manure into highly active N–P co-doped metal-free biocarbon electrocatalysts: effect of chemical treatment on their catalytic activity for the ORR

2019 ◽  
Vol 3 (5) ◽  
pp. 1307-1316 ◽  
Author(s):  
I. L. Alonso-Lemus ◽  
M. Z. Figueroa-Torres ◽  
D. Lardizabal-Gutíerrez ◽  
P. Bartolo-Pérez ◽  
J. C. Carrillo-Rodríguez ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Chemical Treatment ◽  
Raw Material ◽  
Chicken Manure ◽  
Metal Free ◽  
Highly Active ◽  
Co Doped

In this work, the use of chicken manure as the raw material for obtaining metal-free biocarbons as electrocatalysts was studied.

Correlation Between Tunable Oxygen Defects in TiO2 Nanoflower and Its Photocatalytic Performance for the Degradation of Organic Waste

NANO ◽  
2020 ◽  
Vol 15 (02) ◽  
pp. 2050018
Author(s):  
Cai Chen ◽  
Han Zhang ◽  
Arshid M. Ali ◽  
Hui Zhang
Keyword(s):  
Catalytic Activity ◽  
Degradation Rate ◽  
Surface Defects ◽  
Hydrogen Reduction ◽  
Defect Concentration ◽  
Oxygen Defect ◽  
Surface Oxygen ◽  
Fixed Amount ◽  
Photo Catalytic Activity ◽  
Oxygen Defects

Oxygen defects of nanoflower TiO2 photo-catalyst was fabricated at the presence of hydrogen at different temperatures (100–600∘C) and the concentrations of oxygen defects were firstly quantitatively analyzed by hydrogen programmed temperature reduction techniques (H2-TPR). Total oxygen defect concentration and surface oxygen defect concentration were consistent with XPS and EPR results, respectively. Even at the hydrogen thermal temperature of 600∘C, the shape of TiO2 was still kept as nanoflower structure as characterized by SEM. However, the rutile and anatase coexist in the composition of crystal phase when hydrogen reduction temperature of the TiO2 catalyst reached 400∘C to 600∘C as proved by Raman and XRD results. TiO2 sample with oxygen defects shows excellent photo-catalytic activity for degradation of Direct Blue 78(DB) regardless of ultraviolet light (the maximum degradation rate achieved within 100[Formula: see text]min was 93.27%) or visible light (the maximum degradation rate achieved within 100[Formula: see text]min was 88.25%). The photo-catalytic activity seems to be highly correlated with the surface oxygen defects of TiO2 catalyst. With surface oxygen-defect concentrations increase, the degradation ability on DB was significantly enhanced, while bulk oxygen defects had negligible effect on the photo-catalytic activity. The enhanced photo-catalytic performance of TiO2 with a fixed amount of oxygen defects was attributed to the strong capturing capability of the photo-generated electrons. In addition, the surface defects could also improve the photo-catalytic reaction efficiency.

Enhancement mechanism of sulfur dopants on the catalytic activity of N and P co-doped three-dimensional hierarchically porous carbon as a metal-free oxygen reduction electrocatalyst

2019 ◽  
Vol 9 (21) ◽  
pp. 5906-5914 ◽  
Author(s):  
Yongxi Zan ◽  
Zhengping Zhang ◽  
Meiling Dou ◽  
Feng Wang
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Three Dimensional ◽  
Nitrogen And Phosphorus ◽  
Free Oxygen ◽  
Hierarchically Porous ◽  
Metal Free ◽  
Enhancement Mechanism ◽  
Co Doped

A sulfur, nitrogen and phosphorus ternary-doped cattle-bone-derived hierarchically porous carbon metal-free electrocatalyst was synthesized, exhibiting superior oxygen reduction performance compared to Pt/C.

Metal-free graphene-based catalyst—Insight into the catalytic activity: A short review

2015 ◽  
Vol 492 ◽  
pp. 1-9 ◽  
Author(s):  
Huawen Hu ◽  
John H. Xin ◽  
Hong Hu ◽  
Xiaowen Wang ◽  
Yeeyee Kong
Keyword(s):  
Catalytic Activity ◽  
Short Review ◽  
Metal Free ◽  
Free Graphene ◽  
Insight Into
Sign in / Sign up

Export Citation Format

Share Document