Variation Trends of CO Hydrogenation Performance of (Al)–O–(Zn) Supported Cobalt Nanocomposites: Effects of Gradual Doping with Zn–O Lewis Base

Xing, Yu; Liu, Zhenxin; Xue, Yingying; Wu, Dehai; Fang, Shaoming

doi:10.1007/s10562-016-1692-y

Cited by 11 publications

(22 citation statements)

References 36 publications

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“…CO 2 ‐TPD is widely used to measure the surface basicity of catalysts . The CO 2 ‐TPD profiles of in‐situ reduced Zn‐containing catalysts are presented in Figure , Supporting Information Figure S11 and Table S2.…”

Section: Resultsmentioning

confidence: 99%

“…Argon is used as the internal standard component of syngas for GC analysis. The GC measurement method is similar to our previous reports . CO, CH 4 and CO 2 are analyzed by a GC with a TCD detector equipped with a TDX‐01 packed column (6 m in length).…”

Section: Methodsmentioning

confidence: 99%

“…In comparison with simple oxides (e. g., Al 2 O 3 or SiO 2 ), complex oxides (e. g., AB 2 O 4 spinels or ABO 3 perovskites) usually have higher resistance against steam and thermal sintering . Although iron itself has good water‐gas shift (WGS) activity and will not be seriously destroyed by steam conditions, the simple oxide support phase of an iron‐based catalyst may have to suffer from steam environment and formation of unfavorable metal‐support compounds . The development of complex oxides supported iron (or cobalt) nanocomposites may be promising to better fit the steam conditions of FTO and FTS .…”

Section: Introductionmentioning

confidence: 99%

“…Although iron itself has good water‐gas shift (WGS) activity and will not be seriously destroyed by steam conditions, the simple oxide support phase of an iron‐based catalyst may have to suffer from steam environment and formation of unfavorable metal‐support compounds . The development of complex oxides supported iron (or cobalt) nanocomposites may be promising to better fit the steam conditions of FTO and FTS . Selectivity modulation of CO hydrogenation by special element attracts great attentions .…”

Section: Introductionmentioning

confidence: 99%

“…Selectivity modulation of CO hydrogenation by special element attracts great attentions . Since the beginning of 2015, we have demonstrated that spinel‐type supported cobalt catalysts are tolerant against sulfur poisons and steam during CO hydrogenation . Literature about spinel‐supported iron‐based catalysts for CO hydrogenation to light olefins is still sparse .…”

Section: Introductionmentioning

confidence: 99%

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Development of Highly Selective Support for CO Hydrogenation to Light Olefins with Partially Passivated Iron Catalysts

et al. 2019

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To rule out disturbances from water‐soluble efficient promoters (e. g., K2O or combination of S/Na), a simplified iron/support catalyst system was employed to investigate novel supports for the catalytic conversion of syngas (CO+H2) to light olefins (FTO). A series of supports with nominal compositions of ZnAl2O4 ⋅ xAl2O3 (x=1, 2, 3) were prepared by coprecipitation and subsequent high temperature calcination at 1200 °C for 24 h to generate partially passivated ZnAl2O4 and Al2O3 phases, through which each formed component of a catalyst may minimize interactions among them and exhibit unique activity. Iron catalysts were prepared by incipient wetness of iron salts over these supports. At a total pressure of ca. 20 bar and a CO conversion of 35 %, a catalyst with a nominal composition of 15 %Fe/85 %(ZnAl2O4 ⋅ 3Al2O3) exhibits a surprising C2=‐C4= hydrocarbon distribution of 58 %, which reaches a huge increase by almost 100 % in comparison with iron catalysts over regular supports (e. g., carbon, gamma‐Al2O3, etc.). This catalyst demonstrates the 1200 °C passivated ZnAl2O4 ⋅ 3Al2O3 as probably the most selective support material for iron‐based FTO catalysts. At CO conversion of 35 %, the contents of ethylene in C2, propylene in C3, and butylene in C4 products achieve extraordinary values of 82 %, 92 %, and 91 %, respectively.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Development of Highly Selective Support for CO Hydrogenation to Light Olefins with Partially Passivated Iron Catalysts

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PO₄³⁻ Coordinated Robust Single‐Atom Platinum Catalyst for Selective Polyol Oxidation**

et al. 2022

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Achieving efficient catalytic conversion over a heterogeneous catalyst with excellent resistance against leaching is still a grand challenge for sustainable chemical synthesis in aqueous solution. Herein, we devised a single‐atom Pt1/hydroxyapatite (HAP) catalyst via a simple hydrothermal strategy. Gratifyingly, this robust Pt1/HAP catalyst exhibits remarkable catalytic selectivity and catalyst stability for the selective oxidation of C2–C4 polyols to corresponding primary hydroxy acids. It is found that the Pt−(O−P) linkages with strong electron‐withdrawing function of PO43− (Pt1−OPO43− pair active site) not only realize the activation of the C−H bond, but also destabilize the transition state from adsorbed hydroxy acids toward the C−C cleavage, resulting in the sharply increased selectivity of hydroxy acids. Moreover, the strong PO43−‐coordination effect provides electrostatic stabilization for single‐atom Pt, ensuring the highly efficient catalysis of Pt1/HAP for over 160 hours with superior leaching resistance.

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PO₄³⁻ Coordinated Robust Single‐Atom Platinum Catalyst for Selective Polyol Oxidation**

et al. 2022

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Variation Trends of CO Hydrogenation Performance of (Al)–O–(Zn) Supported Cobalt Nanocomposites: Effects of Gradual Doping with Zn–O Lewis Base

Cited by 11 publications

References 36 publications

Development of Highly Selective Support for CO Hydrogenation to Light Olefins with Partially Passivated Iron Catalysts

Development of Highly Selective Support for CO Hydrogenation to Light Olefins with Partially Passivated Iron Catalysts

PO₄³⁻ Coordinated Robust Single‐Atom Platinum Catalyst for Selective Polyol Oxidation**

PO₄³⁻ Coordinated Robust Single‐Atom Platinum Catalyst for Selective Polyol Oxidation**

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Variation Trends of CO Hydrogenation Performance of (Al)–O–(Zn) Supported Cobalt Nanocomposites: Effects of Gradual Doping with Zn–O Lewis Base

Cited by 11 publications

References 36 publications

Development of Highly Selective Support for CO Hydrogenation to Light Olefins with Partially Passivated Iron Catalysts

Development of Highly Selective Support for CO Hydrogenation to Light Olefins with Partially Passivated Iron Catalysts

PO43− Coordinated Robust Single‐Atom Platinum Catalyst for Selective Polyol Oxidation**

PO43− Coordinated Robust Single‐Atom Platinum Catalyst for Selective Polyol Oxidation**

Contact Info

Product

Resources

About

PO₄³⁻ Coordinated Robust Single‐Atom Platinum Catalyst for Selective Polyol Oxidation**

PO₄³⁻ Coordinated Robust Single‐Atom Platinum Catalyst for Selective Polyol Oxidation**