Preparation of high performance nano-sized Cu/ZnO/Al2O3 methanol synthesis catalyst via aluminum hydrous oxide sol

Bahmani, Mohsen; Farahani, Bahman Vasheghani; Sahebdelfar, Saeed

doi:10.1016/j.apcata.2016.04.018

Cited by 59 publications

(26 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There is a sharp characteristic diffraction peak located at 2 theta = 26.4° belongs to graphite (PDF# 01-0646) which are used as adhesive in the CuO–ZnO–Al 2 O 3 component [ 26 ]. No characteristic diffraction peaks of Al 2 O 3 were observed in all XRD patterns, suggesting that Al 2 O 3 are highly dispersed in the bifunctional catalysts [ 27 ]. XRD spectras of dual-functional catalysts with different mass ratios are shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

One-Pass Conversion of Benzene and Syngas to Alkylbenzenes by Cu–ZnO–Al2O3 and ZSM-5 Relay

Han

Liu

et al. 2021

Catal Lett

View full text Add to dashboard Cite

Graphic Abstract Alkylbenzenes have a wide range of uses and are the most demanded aromatic chemicals. The finite petroleum resources compels the development of production of alkylbenzenes by non-petroleum routes. One-pass selective conversion of benzene and syngas to alkylbenzenes is a promising alternative coal chemical engineering route, yet it still faces challenge to industrialized applications owing to low conversion of benzene and syngas. Here we presented a Cu–ZnO–Al 2 O 3 /ZSM-5 bifunctional catalyst which realizes one-pass conversion of benzene and syngas to alkylbenzenes with high efficiency. This bifunctional catalyst exhibited high benzene conversion (benzene conversion of 50.7%), CO conversion (CO conversion of 55.0%) and C7&C8 aromatics total yield (C7&C8 total yield of 45.0%). Characterizations and catalytic performance evaluations revealed that ZSM-5 with well-regulated acidity, as a vital part of this Cu–ZnO–Al 2 O 3 /ZSM-5 bifunctional catalyst, substantially contributed to its performance for the alkylbenzenes one-pass synthesis from benzene and syngas due to depress methanol-to-olefins (MTO) reaction. Furthermore, matching of the mass ratio of two active components in the dual-function catalyst and the temperature of methanol synthesis with benzene alkylation reactions can effectively depress the formation of unwanted by-products and guarantee the high performance of tandem reactions. Supplementary Information The online version contains supplementary material available at 10.1007/s10562-021-03617-5.

show abstract

Section: Resultsmentioning

confidence: 99%

“…S4). CO 2 in gas phase productsis considered to be mainly formed by the water gas shift reaction [ 66 , 67 ]. Based on the above discussion, we proposed the reaction paths on hybrid catalysts with different acidity, as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

One-Pass Conversion of Benzene and Syngas to Alkylbenzenes by Cu–ZnO–Al2O3 and ZSM-5 Relay

Han

Liu

et al. 2021

Catal Lett

View full text Add to dashboard Cite

show abstract

“…With the increase in Al content, two reduction peaks gradually appeared for the other three catalysts, indicating that there were two different forms of reducible Cu species. As reported in the literature, the peak around 220 and 260 °C was assigned to the reduction of CuO with weak and strong interaction with other components, respectively. From XRD results, it can be founded that the dispersion of CuO was obviously improved with the increase in Al content, suggesting that the interaction between CuO and Al species was strong.…”

Section: Resultsmentioning

confidence: 99%

The Study on Higher Alcohols Synthesis from Syngas over CuZnAl Catalysts Derived from Hydrotalcite‐Like Precursors

et al. 2020

View full text Add to dashboard Cite

A series of CuZnAl catalysts with different Al contents were derived from hydrotalcite‐like precursors prepared by the coprecipitation method. Activity evaluation of the catalyst for higher alcohols synthesis from syngas was investigated, and the catalysts were characterized by XRD, BET, H2‐TPR, CO2‐TPD‐MS and CO‐TPD‐MS. The results revealed that different Al content showed an influence on the dispersion of the reducible Cu species, the specific surface area, the surface alkali strength and the adsorption capacity of CO, which affecting the CO conversion and the selectivity of higher alcohols. Catalysts with strong interaction between CuO and Al species, more medium and strong basic sites, and adequate CO dissociation adsorption benefited production of higher alcohols.

show abstract

“…48 To gain more insight into the results of TPR, all proles were deconvoluted into two Gaussian peaks. According to literatures, 33,49 the peaks a and b could be ascribed to the reduction of different CuO phases: the lowtemperature peak (peak a) was the surface CuO species, which is highly dispersed and inuenced by ZnO, the hightemperature peak (peak b) belonged to isolated copper oxide (bulk CuO). Table 3 illustrates that the peak positions and the area proportion of these two peaks.…”

Section: General Characterizationmentioning

confidence: 87%

“…All curves of Cu-0.5, Cu-1, Cu-2, Cu-3, Cu-4 were of type IV and had mesoporous structure (2 nm < pore diameter < 50 nm). 33 For these samples, the H3 type hysteresis loop (according to IUPAC classication) was observed, which was related to non-rigid aggregates of plate-like particles. 27,34,35 In addition, with the decreasing of Cu content, the condensation occurred at relatively low pressure.…”

Section: General Characterizationmentioning

confidence: 89%

Effective hydrogenation of carbonates to produce methanol over a ternary Cu/Zn/Al catalyst

Wang

Xiang

et al. 2020

RSC Adv.

View full text Add to dashboard Cite

show abstract

Preparation of high performance nano-sized Cu/ZnO/Al2O3 methanol synthesis catalyst via aluminum hydrous oxide sol

Cited by 59 publications

References 61 publications

One-Pass Conversion of Benzene and Syngas to Alkylbenzenes by Cu–ZnO–Al2O3 and ZSM-5 Relay

One-Pass Conversion of Benzene and Syngas to Alkylbenzenes by Cu–ZnO–Al2O3 and ZSM-5 Relay

The Study on Higher Alcohols Synthesis from Syngas over CuZnAl Catalysts Derived from Hydrotalcite‐Like Precursors

Effective hydrogenation of carbonates to produce methanol over a ternary Cu/Zn/Al catalyst

Contact Info

Product

Resources

About