Synthesis of dimethyl ether (DME) on modified HY zeolite and modified HY zeolite-supported Cu–Mn–Zn catalysts

Fei, Jinhua; Hou, Zhaoyin; Zhu, Bing; Liu, Hui; Zheng, Xiaoming

doi:10.1016/j.apcata.2006.02.019

Cited by 151 publications

(84 citation statements)

References 21 publications

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“…The activity of H-type zeolites has been reported for the dehydration of methanol to DME [15][16][17][18][19]. These zeolites are characterized by their high acidity, however, such high acidity can result in significant coke formation and consequently fast deactivation [20].…”

Section: Furthermore Diesel Exhausts Have Been Linked To Cancer [1] Imentioning

confidence: 99%

Effect of precursor on the performance of alumina for the dehydration of methanol to dimethyl ether

Osman

Abu‐Dahrieh

Rooney

et al. 2012

Applied Catalysis B: Environmental

124

100

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Highlights Effect of precursors on the catalytic performance of alumina. AN samples is higher activity than AC, while AN550 is the optimum one. The AN550 showed methanol conversion and DME selectivity of 72% and 100% at 250 °C, respectively. Acid site density affected catalytic performance among the catalysts with alumina phase. Synthesis of alumina catalyst with high activity compared to commercial γ-Al 2 O 3 .Page 3 of 33 A c c e p t e d M a n u s c r i p t Abstract Dimethyl ether (DME) is amongst one of the most promising alternative, renewable and clean fuels being considered as a future energy carrier. In this study, the comparative catalytic performance of γ-Al 2 O 3 prepared from two common precursors (aluminium nitrate (AN) and aluminium chloride (AC)) is presented. The impact of calcination temperature was evaluated in order to optimise both the precursor and pre-treatment conditions for the production of DME from methanol in a fixed bed reactor. The catalysts were characterized by TGA, XRD, BET and TPD-pyridine. Under reaction conditions where the temperature ranged from 180-300˚C with a WHSV= 12.1 h -1 it was found that all the catalysts prepared from AN(η-Al 2 O 3 ) showed higher activity, at all calcination temperatures, than those prepared from AC(γ-Al 2 O 3 ). In this study the optimum catalyst was produced from AN and calcined at 550 ˚C.This catalyst showed a high degree of stability and had double the activity of the commercial γ-Al 2 O 3 or 87% of the activity of commercial ZSM-5 (80) at 250 ˚C.

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Section: Furthermore Diesel Exhausts Have Been Linked To Cancer [1] Imentioning

confidence: 99%

Effect of precursor on the performance of alumina for the dehydration of methanol to dimethyl ether

Osman

Abu‐Dahrieh

Rooney

et al. 2012

Applied Catalysis B: Environmental

124

100

View full text Add to dashboard Cite

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“…Kim et al [5] studied the effect of γ-alumina as a binder on the catalytic performance of Na-modified ZSM-5 and reported that a Na-H-ZSM-5 containing 70% of γ-alumina as a binder was active and stable in the conversion of methanol to DME. Fei et al [28] studied the synthesis of DME via methanol dehydration over HY zeolite and over Fe-, Co-, Ni-, Cr-, or Zr-modified HY zeolite, and via direct CO hydrogenation over modified HY zeolite-supported Cu-Mn-Zn catalysts. They found that Zr-and Ni-modified HY zeolite exhibited the highest activity and stability for methanol dehydration, while Fe-, Co-, and Cr-modified HY zeolite deactivated quickly due to carbon deposition.…”

Section: Introductionmentioning

confidence: 99%

Activity and deactivation studies for direct dimethyl ether synthesis using CuO–ZnO–Al2O3 with NH4ZSM-5, HZSM-5 or γ-Al2O3

Abu‐Dahrieh

Rooney

Goguet

et al. 2012

Chemical Engineering Journal

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“…They were modifi ed by copper-, manganese-and zinc-containing compounds according to the procedure given in Ref. [3]. The amount of Cu-Mn-Zn spinels on zeolites was 5 and 10 wt%.…”

Section: Methodsmentioning

confidence: 99%

“…Fierro et al [1] performed the preparation and characterization of different catalysts containing Cu-Zn-Mn oxides. It has been also reported by Fei et al [2,3] t hat Cu-Mn-Zn oxides supported on HY zeolite are active catalysts for dimethyl ether (DME) synthesis from syngas via direct CO hydrogenation. One of components of these catalysts is the non-stoichiometric spinel Cu 1.4 Mn 1.6 O 4 beside other Cu-Mn-Zn oxides.…”

Section: Introductionmentioning

confidence: 99%

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Copper-manganese-zinc spinels in zeolites: study of EMR spectra

et al. 2015

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Abstract. The aim of this study is the application of electron magnetic resonance (EMR) spectroscopy to determine the interactions between NaY and HY zeolites and Cu-Mn-Zn spinels loaded onto the zeolite surfaces. The materials were characterized using XRD and IR spectroscopies. Four types of EMR lines were observed for Cu-Mn-Zn/NaY, Cu-Mn-Zn/HY samples. The difference between the EMR spectra recorded at 77 and 293 K has been shown. The spectra recorded at 77 K allowed us to distinguish between the species formed on NaY and HY zeolites. The EMR spectrum of Cu-Mn-Zn/NaY recorded at 77 K showed only one line attributed to antiferromagnetic spinels Cu 1.4 Mn 1.6 O 4 and ZnMn 2 O 4 or/and Cu 0.5 Zn 0.5 Mn 2 O 4 . The spinels appeared to be more stable (more strongly attached) on HY zeolite than on NaY one. It was proved that different strength of interactions between the zeolites and Cu-Mn-Zn spinels was caused by differences in the acidity of NaY and HY zeolites.

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Synthesis of dimethyl ether (DME) on modified HY zeolite and modified HY zeolite-supported Cu–Mn–Zn catalysts

Cited by 151 publications

References 21 publications

Effect of precursor on the performance of alumina for the dehydration of methanol to dimethyl ether

Effect of precursor on the performance of alumina for the dehydration of methanol to dimethyl ether

Activity and deactivation studies for direct dimethyl ether synthesis using CuO–ZnO–Al2O3 with NH4ZSM-5, HZSM-5 or γ-Al2O3

Copper-manganese-zinc spinels in zeolites: study of EMR spectra

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