The catalyst was characterized by BET, XRD, XPS and TEM. The results of GC–MS indicate NiCo/AC can suppress tar successfully. Complete conversion of cyclohexane was achieved in 6 h with H2O2 as the oxidant and acetonitrile as the solvent for both catalysts at 70 °C, yielding only cyclohexanone and cyclohexanol as products. In addition, the XRD diffraction results could also prove the existence of two kinds of spinel NiAl, , which veriﬁed the interaction between Ni/Co and, the intensity of the diffraction peaks of bimetallic NiCo decreased with the addition of Co, which, suggested that the introduction of Co would lead to the better dispersibility of NiCo/, A similar behavior was reported using monometallic Co into Ni/CNT formation bimetallic catalysts, effects of catalyst Ni/Co ratio, reaction time, and temperature on the hydrogenation rate were, investigated in this study. Compared with thermophilic digestion of FVR, thermophilic digestion of 160°C treated FVR, and thermophilic digestion of WVR with mesophilic digestion of WL, the thermophilic digestion of 160°C treated WVR with mesophilic digestion of WL obtained the maximum total methane yield of 102.5L/kg FVR. quantiﬁcation model should be re-calculated for re-monitoring the conversion process. According to Figure 6, it can b, reaction equilibrium, all of the conversion, temperatures. High efficient hydrodeoxygenation of oxygenated chemicals at low temperature is a critical issue for biomass crude oil upgrading to reduce equipment and operation expenses. Access scientific knowledge from anywhere. Tien-Thao, N.; Zahedi-Niaki, M.H. The HDO of phenol was found to be favored on the bifunctional Rh/C and Ni/AC catalysts which exhibit a large amount of well dispersed metallic species (from HRTEM).
Thus, the real-time concentration of cyclohexanol (i.e.. The characterization of used catalysts suggest that the severe agglomeration of nanoparticles leads to the decrease in catalytic activity. (2p3/2) respectively, and binding energies at 795. Once you have the olefin, hydrohalogenation is facile. Step 2: Now under the high temperature and and pressure add allow phenoxde ion to react with carbon dioxide gas to give salicyclic acid .Also known as Kolbe's reaction. Phenol was found as main intermediate with 1-methyl-1,2-cyclohexanediol as another intermediate instead of 2-methoxy-cyclohexanol. To study the prediction of the model’s r, and measured values at different temperature and time ar, be found that most of the RD data of predicted values was within ~6.0%, which indicates that the, temperature had little effect on the results. has been investigated [, ]. Selective Conversion of Phenol in a Subcritical W, Faculty of Environmental Science and Engineering, Kunming University of Science and T, Kunming 650500, China; email@example.com (Y, The selective conversion of phenolic materials is a well-adopted solution to upgrade. Picric acid also known as 2,4,6-trinitro phenol.
; Kazmerski, L.L. From the calculations it is shown that the primary function of this type of modifier is to decrease the reaction rate. Copyright © 2009 Elsevier B.V. All rights reserved.
), which should further affect th, the time was 4 h, phenol amount was 2 wt%, catalyst and phenol was 1 g/g. Simultaneously, with increasing loading ratio of Ni, the selective conversion for generating . The reuse test result confirms that oxygen vacancies are relatively stable in comparison with phosphide. It was found that the catalyst not only improved conversion of 2-ethylanthraquinone (93%) but also showed higher hydrogenation efficiency of 9.15 gH2O2/L with much lower concentration of the catalyst (0.5 g) at 75°C and 0.3 MPa compared to conventional catalysts Pd/PSC and Pd/PAC, which gave 4 g/L and 5 g/L respectively with 500 g of catalyst. were ﬁxed similarly as mentioned in the selection of catalyst preparation. light and heavy water have been studied. hydrodeoxygenation of guaiacol to cyclohexanol over supported Ni and Co bimetallic catalysts. The possible reaction paths of phenol during subcritical hydrothermal conversion. The outstanding catalytic activity (i.e., conversion and, selectivity) of bimetallic catalysts may be caused by the unique surface properties of bimetallic alloy, nanoparticles. A series of Ni-M (M=Co or Zn) bimetallic nanoparticles supported on graphitized carbon black were synthesized and examined as catalysts for gasification of phenol in SCW. of components in the surface is proposed. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V.
Complete conversion of cyclohexanol occurs at 700 °C with 70% gasification. The cleavage of C-O bonds in guaiacol was investigated over NiCo/γ-Al2O3 catalysts in aqueous phase. https://doi.org/10.1016/j.cclet.2018.01.020.
All catalysts were prepared using the same procedur, It should be pointed out that a catalyst is named as “15 wt%Ni–xCo/, in which “15 wt%” represents the weight percentage of active metal (Ni + Co)/, The speciﬁc surface area was measured by BET method using a surface area analyzer, (Micromeritics Instrument Corporation, Norcross, GA, USA).
Also the effect of the γ and neutron irradiation on the Ni−ZnO catalysts (with various The effects of process parameters on guaiacol conversion and products distribution were investigated in detail associated with solvent effect. Hangkong Dongli Xuebao/Journal of Aerospace Power. Lignin composition and structure in young versus adult Eucalyptus globulus plants. Add 3 boiling chips and arrange for a distillation using a cooled 10 mL graduated cylinder as a receiver. suitable for the description of the selective conversion process of phenol. A chromium-silica catalyst (RH-Cr) and the chromium and 4-(methylamino)benzoic acid incorporated catalyst (RH-Cr-A) was synthesized from rice husk. While for tar formation, the Ea is 112.95 ± 24 kJ/mol and the frequency factor is 13.99 ± 0.37. The high catalytic performance of CoOx@CN was associate with the high surface area (340 m2/g) and uniformly dispersed NPs. Selective Conversion Kinetic Behaviors of Phenol, catalyst was used in the selective conversion of a lignin model, (i.e., phenol). Phenol gasification is possible via hydrogenation of phenol into cyclohexanol. The study of the chemical kinetics portion revealed that the hydrogenation reaction rates with the Pd-UiO-66 catalyst are over 10 times higher than those with Pd-UiO-66-NH2 under the same conditions. In this work, firstly a series of NiOx/SiO2 catalysts containing some oxygen vacancies were prepared by sol-gel and controllable temperature-programmed reduction method.
... Hydroxyacetone and furfural have previously been selected as model compounds because hydroxyacetone is an abundant molecule found in the aqueous phase of biomass fast pyrolysis liquids , and furfural is the dehydration product of carbohydrates and hard to handle compared to the mother C5 sugar, and has thus been used to mimic intermediates from sugar dehydration [31,32].
The key factors influencing the hydrogenation, (e.g., water density, phenol amount, the mass ratio be, were fixed similarly as mentioned in the selection of catalyst, kinetic results indicated that the conversion yield of, time and temperature, and the products were, cyclohexanone, and cyclohexane.
The outstanding catalytic activity (i. of bimetallic catalysts may be caused by the, surface by changing the electronic structure of Ni [3. The hydrogenation of allylic alcohols using Ru(S)-binap and the hydrogenation of cu-keto esters using cinchona-modified supported Pt are discussed. The catalytic tests were carried out in a flow microreactor at 310 °C and at a total hydrogen pressure of 3 MPa. FTIR and EDX analysis showed that the amino benzoic acid and chromium had been incorporated into the silica matrix which resulted in nano-sized pores in RH-Cr-A. exhibits, incredible potential for direct treatment of wet biomass in its natural state, which can avoid extra, energy consumption for drying biomass before pyrolysis processes [, As the feedstock, the biomass—also called lignocellulosic biomass—is most often comprised, of plant materials that are not used for food or feed, the main chemical constituents of which. BaO + HNO3 ->Ba(NO3)2 + H2O, new dp guys how is it who is online kaisi rhe gi yeh dp. Catalytic conversion of substituted and un-substituted cyclohexanone into corresponding enones and phenols by nanocatalysts under acid or base-free reaction conditions. Step 1: First treat the phenol with concentrated sulfuric acid. The correlation between the predicted and measured data; (. FTIR and EDX analysis showed that the amino benzoic acid and chromium had been incorporated into the silica matrix which resulted in nano-sized pores in RH-Cr-A. nanoparticle-catalytic gasiﬁcation of phenol in supercritical water, NiCo/AC bimetal for gasiﬁcation in supercritical water, Kordouli, E.; Kordulis, C.; Lycourghiotis, A.; Cole, R.; V. of carbon-supported Rh, Ni and Mo-Ni catalysts. Herein, in this work co-precipitation and an incipient wetness-impregnation method are used for the synthesis of Nano-hybrid (Zr–Al–La (ZAL)) supported Pd catalyst for the hydrogenation of 2-Ethylanthraquinone.
The alloying of Ni and the second metal (i.e., Co) may lead to the change of the catalyst, particles were chosen for the analysis of the selective conversion kinetic, behaviors of phenol into cyclohexanol in the rest of the study, characterized.
Applied Catalysis A: General 2017 , …
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