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1. An experimental investigation of the use of gasoline-acetylene mixtures at different excess air ratios in an SI engine

Author:
İlhak, Mehmet İlhan; Tangöz, Selim; Akansu, Selahaddin Orhan; Kahraman, Nafiz
Source:
Energy 2019 v.175 pp. 434-444
ISSN:
0360-5442
Subject:
carbon monoxide,   etc   ; acetylene; air; combustion; emissions; gasoline;     Show all 6 Subjects
Abstract:
... This study presents experimental results of engine performance, combustion analyzes and emissions values in an SI engine fueled by gasoline-acetylene blends. The experiments were carried out at 1500 rpm engine speed, different loads (25% and 50%) and optimum spark timing under different mixture conditions. Engine was operated up to 1.70 and 2.12 excess air ratios for 500 g/h and 1000 g/h acetylene ...
DOI:
10.1016/j.energy.2019.03.058

2. Correction: Utilizing FBR to produce olefins from CO reduction using Fe–Mn nanoparticles on reduced graphene oxide catalysts and comparing the performance with SBR

Author:
Nasser, A. L.-Hassan; EL-Naggar, Hamada; El-Bery, Haitham; Basha, Islam; Abdelmoneim, Ahmed
Source:
RSC advances 2019 v.9 no.19 pp. 10937
ISSN:
2046-2069
Subject:
carbon monoxide,   etc   ; catalysts; graphene oxide; nanoparticles;     Show all 4 Subjects
Abstract:
... Correction for ‘Utilizing FBR to produce olefins from CO reduction using Fe–Mn nanoparticles on reduced graphene oxide catalysts and comparing the performance with SBR’ by AL-Hassan Nasser et al., RSC Adv., 2018, 8, 42415–42423. ...
DOI:
10.1039/c9ra90024a

3. Comparative evaluation of performance and emissions of CNG engine for heavy-duty vehicles fueled with various caloric natural gases

Author:
Park, Cheolwoong; Kim, Changgi; Lee, Sangho; Lee, Sunyoup; Lee, Janghee
Source:
Energy 2019 v.174 pp. 1-9
ISSN:
0360-5442
Subject:
carbon monoxide,   etc   ; combustion; emissions; gas engines; liquids; natural gas; torque;     Show all 7 Subjects
Abstract:
... In the present study, an 11 l inline six-cylinder natural gas engine of the stoichiometric combustion type, which is implemented in city buses, is used in wide-open throttle and transient mode cycle tests. This is done to assess the effects of natural gas fuel composition on the full-load performance and emissions characteristics under a mode test for emission standards. Experiments were carried o ...
DOI:
10.1016/j.energy.2019.02.120

4. Carbonylation of tertiary carbon radicals: synthesis of lactams

Author:
Yin, Zhiping; Zhang, Zhuan; Zhang, Youcan; Dixneuf, Pierre H.; Wu, Xiao-Feng
Source:
Chemical communications 2019 v.55 no.32 pp. 4655-4658
ISSN:
1364-548X
Subject:
carbon monoxide,   etc   ; carbon; chemical reactions; free radicals; lactams;     Show all 5 Subjects
Abstract:
... Herein, we disclose an interesting iron-catalyzed approach for the carbonylation of a tertiary carbon radical. The tertiary carbon radical generated from a 1,5-hydrogen atom transfer can be captured by CO gas smoothly. Various six-membered lactams were constructed chemo-selectively in high yields. ...
DOI:
10.1039/c9cc02112d

5. Hydrogen enrichment of biogas via dry and autothermal-dry reforming with pure nickel (Ni) nanoparticle

Author:
Rosha, Pali; Mohapatra, Saroj Kumar; Mahla, Sunil Kumar; Dhir, Amit
Source:
Energy 2019 v.172 pp. 733-739
ISSN:
0360-5442
Subject:
carbon monoxide,   etc   ; biogas; carbon; hydrogen; methane; nanoparticles; nickel; temperature;     Show all 8 Subjects
Abstract:
... The present study includes first attempt to assess the performance of bare Ni nanoparticle towards dry and autothermal-dry reforming of synthetic biogas. Influence of reaction temperature was strong on H2/CO ratio in both reforming processes, whereas, weight hour space velocity (WHSV) showed variation in products yields. In dry reforming, Ni showed better performance at high temperature and low WH ...
DOI:
10.1016/j.energy.2019.02.006

6. A thiocarbonate sink on the enzymatic energy landscape of aerobic CO oxidation? Answers from DFT and QM/MM models of MoCu CO-dehydrogenases

Author:
Rovaletti, Anna; Bruschi, Maurizio; Moro, Giorgio; Cosentino, Ugo; Ryde, Ulf; Greco, Claudio
Source:
Journal of catalysis 2019 v.372 pp. 201-205
ISSN:
0021-9517
Subject:
carbon monoxide,   etc   ; energy; enzymes; models; oxidation; quantum mechanics; thermodynamics;     Show all 7 Subjects
Abstract:
... We present a theoretical investigation providing key insights on a long-standing controversial issue that dominated the debate on carbon monoxide oxidation by MoCu CO-dehydrogenases. Previous investigations gravitate around the possible occurrence of a thiocarbonate intermediate, that was repeatedly reported to behave as a thermodynamic sink on the catalytic energy landscape. By using a hierarchy ...
DOI:
10.1016/j.jcat.2019.02.032

7. Steric Effects in CO Oxidation on Pt(111) by Impinging Oxygen Atoms Lead to an Exclusive Hot Atom Mechanism

Author:
Wu, Qisheng; Zhou, Linsen; Guo, Hua
Source:
Journal of physical chemistry 2019 v.123 no.16 pp. 10509-10516
ISSN:
1932-7455
Subject:
carbon monoxide,   etc   ; carbon; carbon dioxide; molecular dynamics; oxidation; oxygen;     Show all 6 Subjects
Abstract:
... Ab initio molecular dynamics calculations are performed to gain insights into the oxidation of CO adsorbed on Pt(111) by impinging O atoms. The calculation results indicate facile reactivity for forming desorbed CO₂ products. Interestingly, this Eley–Rideal reaction is found exclusively via a hot-atom mechanism, in which the impinging O atom captured by the Pt surface attacks the carbon end in the ...
DOI:
10.1021/acs.jpcc.9b02615

8. Synthesis of benzamide-benzothiazole conjugates via palladium-catalysed aminocarbonylation (hydrazinocarbonylation)

Author:
Gergely, Máté; Kollár, László
Source:
Tetrahedron 2019 v.75 no.13 pp. 2027-2036
ISSN:
0040-4020
Subject:
carbon monoxide,   etc   ; acylation; carboxamides; chemoselectivity; moieties; nitrogen; temperature;     Show all 7 Subjects
Abstract:
... The palladium-catalysed aminocarbonylation of iodoarenes was investigated using 2-amino- and 2-hydrazinobenzothiazole as N-nucleophile. The reaction proved to be highly chemoselective in all cases: carboxamides and the corresponding carbohydrazides, obtained by the acylation at the nitrogen adjacent to the C-2 of the benzothiazole moiety, were obtained exclusively and isolated in moderate to high ...
DOI:
10.1016/j.tet.2019.02.026

9. Synthesis of d-glyco-alkynone derivatives via carbonylative Sonogashira reaction

Author:
Darbem, Mariana P.; Esteves, C. Henrique A.; de Oliveira, Isadora M.; Reis, Joel S.; Pimenta, Daniel C.; Stefani, Hélio A.
Source:
RSC advances 2019 v.9 no.17 pp. 9468-9474
ISSN:
2046-2069
Subject:
carbon monoxide,   etc   ; azides; cycloaddition reactions; moieties; molybdenum; triazoles;     Show all 6 Subjects
Abstract:
... A carbonylative Sonogashira coupling approach to the synthesis of glyco-alkynones is described. Eighteen examples were obtained in moderate do nearly quantitative yields under mild conditions employing Mo(CO)₆ as a safe carbon monoxide source. Functionalization of the alkynyl moiety via cycloaddition with organic azides provided six examples of glyco-triazoles. ...
DOI:
10.1039/c9ra00523d

10. Buoyant wind-driven pollutant dispersion and recirculation behaviour in wedge-shaped roof urban street canyons

Author:
Zhang, Xiaochun; Zhang, Zijian; Su, Guokai; Tao, Haowen; Xu, Wenhao; Hu, Longhua
Source:
Environmental science and pollution research international 2019 v.26 no.8 pp. 8289-8302
ISSN:
0944-1344
Subject:
carbon monoxide,   etc   ; buildings; fluid mechanics; pollutants; simulation models; wind speed;     Show all 6 Subjects
Abstract:
... The present study investigated the buoyant wind-driven pollutant plume dispersion and recirculation behaviour inside urban street canyons formed by buildings with wedge-shaped roofs. Numerical modelling was performed using a computational fluid dynamics (CFD) large eddy simulation (LES). Street canyon models with a strongly buoyant fire source located on the street and environmental winds perpendi ...
DOI:
10.1007/s11356-019-04290-3

11. The reaction of a particularly electrophilic acyclic diaminocarbene with carbon monoxide: formation of β- and γ-lactams

Author:
Wallbaum, Lars; Schulz, Tim; Bruhn, Clemens; Siemeling, Ulrich
Source:
Zeitschrift für Naturforschung 2019 v.74 no.2 pp. 221-226
ISSN:
1865-7117
Subject:
carbon monoxide,   etc   ; Lewis acids; beta-lactams; carbenes; chemical reactions;     Show all 5 Subjects
Abstract:
... The reaction of carbon monoxide with the acyclic diaminocarbene iPr₂N–C–TMP (TMP=2,2,6,6-tetramethylpiperidino), generated in situ from the formamidinium salt [(iPr₂N)CH(TMP)][PF₆] and NaN(SiMe₃)₂, unexpectedly afforded a mixture of β- and γ-lactams. ...
DOI:
10.1515/znb-2018-0255

12. Synthesis of trifluoromethyl-group-containing cyclopentadienones by the palladium-catalyzed [2 + 2 + 1] cycloaddition of aryl- and trifluoromethyl-group substituted internal alkynes and carbon monoxide

Author:
Murakami, Shogo; Sonehara, Taro; Iwakami, Kousuke; Tsuji, Hiroaki; Kawatsura, Motoi
Source:
Tetrahedron letters 2019 v.60 no.8 pp. 598-601
ISSN:
0040-4039
Subject:
carbon monoxide,   etc   ; alkynes; catalytic activity; cycloaddition reactions; moieties; palladium;     Show all 6 Subjects
Abstract:
... We investigated the palladium-catalyzed [2 + 2 + 1] cycloaddition of aryl- and trifluoromethyl-group-substituted internal alkynes and carbon monoxide, and revealed that the PdBr2 effectively catalyzed the intended reaction. The PdBr2-catalyzed reaction smoothly proceeded and provided aryl- and trifluoromethyl-group-containing cyclopentadienone derivatives in up to 92% yield. ...
DOI:
10.1016/j.tetlet.2019.01.036

13. The effect of air/fuel ratio on the CO and NOx emissions for a twin-spark motorcycle gasoline engine under wide range of operating conditions

Author:
Deng, Banglin; Li, Qing; Chen, Yangyang; Li, Meng; Liu, Aodong; Ran, Jiaqi; Xu, Ying; Liu, Xiaoqiang; Fu, Jianqin; Feng, Renhua
Source:
Energy 2019 v.169 pp. 1202-1213
ISSN:
0360-5442
Subject:
carbon monoxide,   etc   ; air; emissions; fuels; gas engines; motorcycles; nitric oxide;     Show all 7 Subjects
Abstract:
... In the present study, the possibility and limitation of lean burn in a motorcycle engine were explored, from the aspect of exhaust emissions. The CO and NOx emissions were studied by experimental measurements and combined simulations on a twin-spark motorcycle gasoline engine under wide range of operating conditions. The results illuminated that, the CO emissions drop sharply when air/fuel mixture ...
DOI:
10.1016/j.energy.2018.12.113

14. Investigation of effect of compression ratio on combustion and exhaust emissions in A HCCI engine

Author:
Calam, Alper; Solmaz, Hamit; Yılmaz, Emre; İçingür, Yakup
Source:
Energy 2019 v.168 pp. 1208-1216
ISSN:
0360-5442
Subject:
carbon monoxide,   etc   ; combustion; emissions; fuels; heat; hydrocarbons; nitrogen oxides; temperature;     Show all 8 Subjects
Abstract:
... In this study effects of compression ratio on HCCI combustion, performance and emissions was investigated parametrically. In addition to parametric investigation and as a novel way of the paper engine BSFC maps were obtained for RON20 andRON40 fuels and each compression ratios of 9:1, 10:1, 11:1 and 12:1. The parametric experiments were carried out at 800 rpm engine speed. In both parametric and m ...
DOI:
10.1016/j.energy.2018.12.023

15. Unifying the Hydrogen Evolution and Oxidation Reactions Kinetics in Base by Identifying the Catalytic Roles of Hydroxyl-Water-Cation Adducts

Author:
Liu, Ershuai; Li, Jingkun; Jiao, Li; Doan, Huong Thi Thanh; Liu, Zeyan; Zhao, Zipeng; Huang, Yu; Abraham, K. M.; Mukerjee, Sanjeev; Jia, Qingying
Source:
Journal of the American Chemical Society 2019 v.141 no.7 pp. 3232-3239
ISSN:
1520-5126
Subject:
carbon monoxide,   etc   ; electrochemistry; hydrogen production; metal ions; nickel; oxidation;     Show all 6 Subjects
Abstract:
... Despite the fundamental and practical significance of the hydrogen evolution and oxidation reactions (HER/HOR), their kinetics in base remain unclear. Herein, we show that the alkaline HER/HOR kinetics can be unified by the catalytic roles of the adsorbed hydroxyl (OHₐd)-water-alkali metal cation (AM⁺) adducts, on the basis of the observations that enriching the OHₐd abundance via surface Ni benef ...
DOI:
10.1021/jacs.8b13228

16. Unexpected wavelength dependency of the photocatalytic CO₂ reduction performance of the well-known (bpy)Re(CO)₃Cl complex

Author:
LangThe authors P. Lang and R. Giereth contributed equally to this article., Philipp; Giereth, Robin; Tschierlei, Stefanie; Schwalbe, Matthias
Source:
Chemical communications 2019 v.55 no.5 pp. 600-603
ISSN:
1364-548X
Subject:
carbon monoxide,   etc   ; carbon dioxide; filters; lighting; photocatalysis; spectroscopy; wavelengths;     Show all 7 Subjects
Abstract:
... The selective photocatalytic reduction of CO₂ to CO has often been accomplished using complexes incorporating the Re(CO)₃Cl fragment. We now discovered that the photocatalytic performance of the well-known parent compound (bpy)Re(CO)₃Cl (bpy = 2,2′-bipyridine) surprisingly depends on the illumination wavelengths: the turnover numbers (TONs) measured using various cut-off filters showed an increase ...
DOI:
10.1039/c8cc08742c

17. Electrochemical CO₂ reduction by a cobalt bipyricorrole complex: decrease of an overpotential value derived from monoanionic ligand character of the porphyrinoid species

Author:
Ogawa, Ayumu; Oohora, Koji; Gu, Wenting; Hayashi, Takashi
Source:
Chemical communications 2019 v.55 no.4 pp. 493-496
ISSN:
1364-548X
Subject:
carbon monoxide,   etc   ; carbon dioxide; chemical reactions; cobalt; electrochemistry; ligands;     Show all 6 Subjects
Abstract:
... A newly synthesized Co(ii) complex with a monoanionic bipyricorrole ligand is found to catalytically promote a selective CO₂ electroreduction to CO with Faradaic efficiency of 75%. Catalytic Tafel plots show that the overpotential of Co(ii) bipyricorrole is 0.35 V lower than that of a Co(ii) complex with the dianionic tetraphenylporphyrin ligand. ...
DOI:
10.1039/c8cc08876d

18. Kinetic features of ethylene copolymerization with 1-hexene over titanium-magnesium Ziegler–Natta catalysts: Effect of comonomer on the number of active centers and the propagation rate constant

Author:
Sukulova, V.V.; Barabanov, A.A.; Matsko, M.A.; Zakharov, V.A.; Mikenas, T.B.
Source:
Journal of catalysis 2019 v.369 pp. 276-282
ISSN:
0021-9517
Subject:
carbon monoxide,   etc   ; catalysts; composite polymers; copolymerization; crystal structure; ethylene; radionuclides;     Show all 7 Subjects
Abstract:
... We present data on the number of active centers (CP) and the propagation rate constant (kP) upon copolymerization of ethylene and 1-hexene over supported titanium–magnesium catalysts of different compositions obtained by polymerization quenching with radioactive carbon monoxide (14CO). The rise in ethylene/1-hexene copolymerization rate as compared to the rate of homopolymerization (the comonomer ...
DOI:
10.1016/j.jcat.2018.11.008

19. Modification of Ga₂O₃ by an Ag–Cr core–shell cocatalyst enhances photocatalytic CO evolution for the conversion of CO₂ by H₂O

Author:
Pang, Rui; Teramura, Kentaro; Tatsumi, Hiroyuki; Asakura, Hiroyuki; Hosokawa, Saburo; Tanaka, Tsunehiro
Source:
Chemical communications 2018 v.54 no.9 pp. 1053-1056
ISSN:
1364-548X
Subject:
carbon monoxide,   etc   ; carbon dioxide; photocatalysis;     Show all 3 Subjects
Abstract:
... A core–shell structure of Ag–Cr dual cocatalyst loaded-Ga₂O₃ was found to significantly enhance the formation rate of CO and selectivity toward CO evolution for the photocatalytic conversion of CO₂ where H₂O is used as an electron donor. ...
DOI:
10.1039/c7cc07800e

20. Carbon Monoxide Mediated Hydrogen Release from PtCu Single-Atom Alloys: The Punctured Molecular Cork Effect

Author:
Darby, Matthew T.; Lucci, Felicia R.; Marcinkowski, Matthew D.; Therrien, Andrew J.; Michaelides, Angelos; Stamatakis, Michail; Sykes, E. Charles H.
Source:
Journal of physical chemistry 2019 v.123 no.16 pp. 10419-10428
ISSN:
1932-7455
Subject:
carbon monoxide; carbon monoxide poisoning,   etc   ; active sites; adsorption; alloys; copper; cork; desorption; hydrogen; hydrogen production; hydrogenation; models; platinum; reaction mechanisms; scanning tunneling microscopy; temperature;     Show all 16 Subjects
Abstract:
... Pt-based materials are used extensively in heterogeneous catalytic processes, but they are notoriously susceptible to poisoning by CO. In contrast, highly dilute binary alloys formed of isolated Pt atoms in a Cu metal host, known as PtCu single-atom alloys (SAAs), are more resilient to CO poisoning during catalytic hydrogenation reactions. In this article, we describe how CO affects the adsorption ...
DOI:
10.1021/acs.jpcc.9b01213