Effects of particle size on the catalytic performance of MWCNTs supported alkalized MoS2catalysts promoted by Ni and Co in higher alcohols synthesis

The catalyst of FeS modified K2CO3/MoS2 (ADM) (Fe/ADM) were prepared and tested for higher alcohols (C2+OH) synthesis (HAS) from synthesis gas(syngas, mixture of H2 and CO). The effects of CO pretreatment on Fe/ADM catalyst and the catalytic performance for HAS were investigated. The ability for C2+OH formation was enhanced and the hydrocarbon selectivity was lowered after CO pretreatment. The XPS spectra revealed that the iron carbide species appeared and the potassium enriched on the surface of CO pretreated Fe/ADM catalyst, which might be responsible for the high activity of higher alcohols and low hydrocarbons synthesis, respectively.

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Structural characterization and catalytic performance of alkali (K) and metal (Co and Rh)-promoted MoS2 catalysts for higher alcohols synthesis

Applied Catalysis A General ◽

10.1016/j.apcata.2010.11.006 ◽

2011 ◽

Vol 392 (1-2) ◽

pp. 166-172 ◽

Cited By ~ 27

Author(s):

Venkateswara Rao Surisetty ◽

Yongfeng Hu ◽

Ajay Kumar Dalai ◽

Janusz Kozinski

Keyword(s):

Structural Characterization ◽

Catalytic Performance ◽

Higher Alcohols ◽

Higher Alcohols Synthesis ◽

Mos2 Catalysts

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CuCo alloy nanonets derived from CuCo2O4 spinel oxides for higher alcohols synthesis from syngas

Catalysis Science & Technology ◽

10.1039/d1cy01179k ◽

2021 ◽

Author(s):

Chao Huang ◽

Peiyu Ma ◽

Ruyang Wang ◽

Wenjie Li ◽

Jingyan Wang ◽

...

Keyword(s):

Structural Properties ◽

Catalytic Performance ◽

Higher Alcohols ◽

Topological Transformation ◽

Higher Alcohol ◽

Higher Alcohols Synthesis ◽

Spinel Oxides ◽

Calcination Method

Porous CuCo alloy nanonets were fabricated via structural topological transformation of CuCo2O4 spinel precursors prepared by a facile hydrothermal-calcination method. Their structural properties together with catalytic performance for higher alcohol...

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Enhanced catalytic performance and promotional effect of molybdenum sulfide cluster-derived catalysts for higher alcohols synthesis from syngas

Catalysis Today ◽

10.1016/j.cattod.2018.03.007 ◽

2018 ◽

Vol 316 ◽

pp. 177-184 ◽

Cited By ~ 4

Author(s):

Na Wang ◽

Jianli Li ◽

Ruijue Hu ◽

Yulong Zhang ◽

Haiquan Su ◽

...

Keyword(s):

Catalytic Performance ◽

Molybdenum Sulfide ◽

Higher Alcohols ◽

Promotional Effect ◽

Higher Alcohols Synthesis ◽

Sulfide Cluster

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Copper–cobalt catalysts supported on mechanically mixed HZSM-5 and γ-Al2O3 for higher alcohols synthesis via carbon monoxide hydrogenation

RSC Advances ◽

10.1039/c9ra01927h ◽

2019 ◽

Vol 9 (26) ◽

pp. 14592-14598

Author(s):

Xuan Ge ◽

Hang Sun ◽

Kun Dong ◽

Yanqi Tao ◽

Qi Wang ◽

...

Keyword(s):

Particle Size ◽

Bimetallic Catalysts ◽

Average Particle Size ◽

Cobalt Catalysts ◽

Average Particle ◽

Higher Alcohols ◽

Good Activity ◽

Carbon Monoxide Hydrogenation ◽

Copper Species ◽

Higher Alcohols Synthesis

CuCo bimetallic catalysts over the mixed supports showed smaller average particle size, better dispersion of cobalt and copper species, and good activity for higher alcohols synthesis.

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K-Modulated Co Nanoparticles Trapped in La-Ga-O as Superior Catalysts for Higher Alcohols Synthesis from Syngas

Catalysts ◽

10.3390/catal9030218 ◽

2019 ◽

Vol 9 (3) ◽

pp. 218 ◽

Cited By ~ 2

Author(s):

Shaoxia Guo ◽

Guilong Liu ◽

Tong Han ◽

Ziyang Zhang ◽

Yuan Liu

Keyword(s):

Catalytic Performance ◽

Higher Alcohols ◽

Higher Alcohol Synthesis ◽

Higher Alcohol ◽

Co Catalysts ◽

Alcohol Synthesis ◽

Composite Oxides ◽

Higher Alcohols Synthesis ◽

Excellent Activity ◽

Co Nanoparticles

Owing to the outstanding catalytic performance for higher alcohol synthesis, Ga-Co catalysts have attracted much attention. In view of their unsatisfactory stability and alcohol selectivity, herein, K-modulated Co nanoparticles trapped in La-Ga-O catalysts were prepared by the reduction of La1−xKxCo0.65Ga0.35O3 perovskite precursor. Benefiting from the atomic dispersion of all the elements in the precursor, during the reduction of La1−xKxCo0.65Ga0.35O3, Co nanoparticles could be confined into the K-modified La-Ga-O composite oxides, and the confinement of La-Ga-O could improve the anti-sintering performance of Co nanoparticles. In addition, the addition of K modulated parts of La-Ga-O into La2O3, which ameliorated the anti-carbon deposition performance. Finally, the addition of K increased the dispersion of cobalt and provided more electron donors to metallic Co, resulting in a high activity and superior selectivity to higher alcohols. Benefiting from the above characteristics, the catalyst possesses excellent activity, good selectivity, and superior stability.

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Positive Role of Synthesis Method and Hard Template on the Catalytic Performance of SAPO-34 in Methanol to Olefin Reaction.

Combinatorial Chemistry & High Throughput Screening ◽

10.2174/1386207323666200720103321 ◽

2020 ◽

Vol 23 ◽

Author(s):

Sajjad Rimaz ◽

Reza Katal

Keyword(s):

Particle Size ◽

Synthesis Method ◽

Catalytic Performance ◽

Hard Template ◽

Structure Directing Agent ◽

Positive Role ◽

Methanol To Olefin ◽

Dg Method ◽

Synthesis Procedure

: In the present study, SAPO-34 particles were synthesized using hydrothermal (HT) and dry gel (DG) conversion methods in the presence of diethyl amine (DEA) as an organic structure directing agent (SDA). Carbon nanotubes (CNT) were used as hard template in the synthesis procedure to introduce transport pores into the structures of the synthesized samples. The synthesized samples were characterized with different methods to reveal effects of synthesis method and using hard template on their structure and catalytic performance in methanol to olefin reaction (MTO). DG conversion method results in smaller particle size in comparison with hydrothermal method, resulting in enhancing catalytic performance. On the other side, using CNT in the synthesis procedure with DG method results in more reduction in particle size and formation of hierarchical structure which drastically improves catalytic performance.

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