The Preparation of Cu-g-C3N4/AC Catalyst for Acetylene Hydrochlorination

Zhao, Wenli; Dai, Bin

doi:10.3390/catal6120193

Cited by 34 publications

(21 citation statements)

References 22 publications

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“…Such an optimisation will be particularly effective for surveys like eBOSS which spans a wide range of redshift. A similar z-weighting technique is also likely to be efficient in improving growth rate measurements from the RSD signal (Zhao et al 2015a;Ruggeri et al 2015).…”

Section: Conclusion and Discussionmentioning

confidence: 99%

The extended Baryon Oscillation Spectroscopic Survey: a cosmological forecast

Zhao

Wang

Ross

et al. 2016

Mon. Not. R. Astron. Soc.

138

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We present a science forecast for the eBOSS survey. Focusing on discrete tracers, we forecast the expected accuracy of the baryonic acoustic oscillation (BAO), the redshift-space distortion (RSD) measurements, the f NL parameter quantifying the primordial non-Gaussianity, the dark energy and modified gravity parameters. We also use the line-of-sight clustering in the Ly-α forest to constrain the total neutrino mass. We find that eBOSS LRGs, ELGs and Clustering Quasars (CQs) can achieve a precision of 1%, 2.2% and 1.6%, respectively, for spherically averaged BAO distance measurements. Using the same samples, the constraint on f σ 8 is expected to be 2.5%, 3.3% and 2.8% respectively. For primordial non-Gaussianity, eBOSS alone can reach an accuracy of σ(f NL ) ∼ 10−15. eBOSS can at most improve the dark energy Figure of Merit (FoM) by a factor of 3 for the Chevallier-Polarski-Linder (CPL) parametrisation, and can well constrain three eigenmodes for the general equation-of-state parameter. eBOSS can also significantly improve constraints on modified gravity parameters by providing the RSD information, which is highly complementary to constraints obtained from weak lensing measurements. A principle component analysis (PCA) shows that eBOSS can measure the eigenmodes of the effective Newton's constant to 2% precision; this is a factor of 10 improvement over that achievable without eBOSS. Finally, we derive the eBOSS constraint (combined with Planck, DES and BOSS) on the total neutrino mass, σ(Σm ν ) = 0.03eV (68% CL), which in principle makes it possible to distinguish between the two scenarios of neutrino mass hierarchies.

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Section: Conclusion and Discussionmentioning

confidence: 99%

The extended Baryon Oscillation Spectroscopic Survey: a cosmological forecast

Zhao

Wang

Ross

et al. 2016

Mon. Not. R. Astron. Soc.

138

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“…In previous studies of numerous metal chlorides and carbon catalytic materials,, activated carbon‐supported AuCl 3 catalyst (AuCl 3 /AC) as a green and efficient non‐mercury catalyst is considered to be most promising alternative to HgCl 2 /AC catalyst for acetylene hydrochlorination ,. Compared with HgCl 2 /AC catalyst, AuCl 3 /AC catalyst exhibits better initial activity.…”

Section: Introductionmentioning

confidence: 99%

The Effect of N‐Doping in Activated Carbon‐Supported Au‐Sr Catalysts for Acetylene Hydrochlorination to Vinyl Chloride

Zhang

et al. 2018

ChemistrySelect

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We used N-doped activated carbon (NAC) as support to prepare a novel AuÀSr catalyst and evaluated the effect of Ndopants on the performance of AuÀSr catalyst in acetylene hydrochlorination. A promoting effect was observed when N atoms were incorporated into AC framework, and the prepared SrAu/NAC catalyst demonstrated optimal activity compared with the undoped Au/AC and SrAu/AC catalysts. The SrAu/NAC also showed an excellent stability during the 500 h test, with acetylene conversion and vinyl chloride selectivity both exceeding 99.9%. A detailed characterization was investigated through XPS, TPD, TPR, TGA, PXRD, TEM, AAS, and BET to reveal the physicochemical properties of the related catalysts. It is demonstrated that the NAC can function as an effective support to enhance activity and life of Au-based catalysts with unique electronic property, and the presence of doped nitrogen species as anchor sites is beneficial to increasing the electron density of active Au(III) center through electron transfer from doped N atoms to the active Au(III) species, and stabilizing active Au(III) ions and retarding its reduction within catalyst preparation and use process. Moreover, the combination of N-dopants and strontium additive may promote a synergistic effect to make active Au species disperse better and significantly enhance the adsorption of HCl, remarkably suppress the reduction of active cationic Au(III), and effectively inhibit carbon deposition in the catalytic reaction.

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“…Dai et al . found that the Cu‐g‐C 3 N 4 significantly enhance the activity performance of CuCl 2 /AC catalysts, due to increasing the pyrrolic N content in Cu‐based catalysts . Moreover, Li et al .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of X–MOF/AC (X=tin or copper) Catalysts for the Acetylene Hydrochlorination

et al. 2019

ChemistrySelect

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In this study, metal organic framework/activated carbon catalysts (X–MOF/AC, where X=Sn or Cu) were synthesized using a facile method and used for the acetylene hydrochlorination reaction. The prepared catalysts were characterized using Fouriertransform infrared spectroscopy (FTIR), X‐ray diffraction analysis(XRD), nitrogen adsorption‐desorption analysis, thermo‐gravimetric analysis (TGA), acetylene temperature‐programmed desorption experiments (C2H2‐TPD), hydrogen temperature‐programmed reduction experiments (H2‐TPR), X‐ray photoelectron spectroscopy (XPS) and scanning electron microscopy‐energy dispersive spectroscopy (SEM‐EDS). Compared with Cu–MOF/AC, Sn‐MOF/AC behaved the highest acetylene conversion of 93.5% under the conditions of 200 °C and an acetylene gas space velocity of 30 h−1. Furthermore, XRD, TGA and SEM‐EDS results showed that Sn‐MOF and Cu–MOF possesse different morphology and thermalstability, respectively. Additionally, C2H2‐TPD and TGA results indicated that Sn‐MOF/AC displays the higher acetylene adsorption and the better anti‐coking ability as compare to Cu–MOF/AC.

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The Preparation of Cu-g-C3N4/AC Catalyst for Acetylene Hydrochlorination

Cited by 34 publications

References 22 publications

The extended Baryon Oscillation Spectroscopic Survey: a cosmological forecast

The extended Baryon Oscillation Spectroscopic Survey: a cosmological forecast

The Effect of N‐Doping in Activated Carbon‐Supported Au‐Sr Catalysts for Acetylene Hydrochlorination to Vinyl Chloride

Synthesis and Characterization of X–MOF/AC (X=tin or copper) Catalysts for the Acetylene Hydrochlorination

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