Gas phase hydrogenation of crotonaldehyde over platinum supported on oxidized carbon black

Carbon ◽  
1998 ◽  
Vol 36 (7-8) ◽  
pp. 1011-1019 ◽  
Author(s):  
F. Coloma ◽  
J. Narciso-Romero ◽  
A. Sepúlveda-Escribano ◽  
F. Rodríguez-Reinoso
Polymers ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1330 ◽  
Author(s):  
Maria Rosaria Acocella ◽  
Aniello Vittore ◽  
Mario Maggio ◽  
Gaetano Guerra ◽  
Luca Giannini ◽  
...  

Influence of different graphite-based nanofillers on crosslinking reaction of resorcinol, as induced by hexa(methoxymethyl)melamine, is studied. Curing reactions leading from low molecular mass compounds to crosslinked insoluble networks are studied by indirect methods based on Differential Scanning Calorimetry. Reported results show a catalytic activity of graphene oxide (eGO) on this reaction, comparable to that one already described in the literature for curing of benzoxazine. For instance, for an eGO content of 2 wt %, the exothermic crosslinking DSC peak (upon heating at 10 °C/min) shifted 6 °C. More relevantly, oxidized carbon black (oCB) is much more effective as catalyst of the considered curing reaction. In fact, for an oCB content of 2 wt %, the crosslinking DSC peak can be shifted more than 30 °C and a nearly complete crosslinking is already achieved by thermal treatment at 120 °C. The possible origin of the higher catalytic activity of oCB with respect to eGO is discussed.


2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Kittima Amornwachirabodee ◽  
Nattapol Tantimekin ◽  
Porntip Pan-In ◽  
Tanapat Palaga ◽  
Prompong Pienpinijtham ◽  
...  

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Yaqin Yu ◽  
Xinrui Li ◽  
Jiemin Cheng

The isothermal adsorption kinetics of Cu2+onto Carbon Black (CB) and Oxidized Carbon Black (OCB) were studied under different solution conditions and compared with bentonite and organic bentonite with the hexadecyltrimethylammonium bromide (HDTMA). The adsorption capacities followed the order of OCB > CB > organic bentonite > bentonite, which was consistent with the orders of their surface roughness and specific surface area. The Fourier transmission infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), and transmission electron microscope (TEM) were used to explore the adsorption mechanism at molecular level. The adsorption process onto CB was physical adsorption. However, with the increase of oxygen-containing functional groups (C=O, C-O, and CNO), the chelation adsorption onto OCB became gradually dominant except physical adsorption. The ion exchange adsorption was the major adsorption mechanism of bentonite. The compounds were introduced into clay interlayer by complexing reaction with Cu2+, which improved the adsorption capacity of organic bentonite. The results present a significant implication for the environmental fate assessment of heavy metal pollution.


2005 ◽  
Vol 78 (4) ◽  
pp. 633-635
Author(s):  
S. A. Imankulova ◽  
N. B. Kondrashev ◽  
V. A. Val’tsifer
Keyword(s):  

2011 ◽  
Vol 335-336 ◽  
pp. 12-17 ◽  
Author(s):  
Chun Jiang Lv ◽  
Yang Yang ◽  
Zhen Liu ◽  
Long Fei Li ◽  
Cheng Chang ◽  
...  

Based on industrial silicon and carbon black as starting materials,β-SiC bonded SiC materials were prepared. The microstructure of such material and the silicon/carbon reaction were analyzed and investigated by XRD, SEM and other tools. The results indicate that the synthesis of β-SiC at 1400°C can be achieved through gas-phase mass transfer, liquid dissolution as well as in-situ reaction. While gas-phase mass transfer is the dominant reaction during the sintering of the material, in which β-SiC exists mainly as nanowhisker. The formation of β-SiC nanowires is believed to be the mechanism of reaction sintering.


1999 ◽  
Vol 48 (9) ◽  
pp. 1053-1058 ◽  
Author(s):  
Kiyoshi HORITA ◽  
Xu LI
Keyword(s):  

ACS Omega ◽  
2018 ◽  
Vol 3 (6) ◽  
pp. 6833-6840 ◽  
Author(s):  
Kittima Amornwachirabodee ◽  
Supaporn Khramchantuk ◽  
Prompong Pienpinijtham ◽  
Nipan Israsena ◽  
Tanapat Palaga ◽  
...  

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