Introduction of Hierarchical Structure into YNU-5 Zeolite and Its Enhanced Catalytic Performance for Hexane Cracking

2021 ◽  
Vol 50 (9) ◽  
pp. 1725-1728
Author(s):  
Qing Liu ◽  
Ryota Sugimoto ◽  
Satoshi Inagaki ◽  
Yoshihiro Kubota
Keyword(s):  
Hierarchical Structure ◽  
Catalytic Performance

scholarly journals Comparison of Catalytic Activity of Chromium–Benzenedicarboxylate Metal–Organic Framework Based on Various Synthetic Approach

Catalysts ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 318 ◽  
Author(s):  
Tian Zhao ◽  
Hexin Zhu ◽  
Ming Dong
Keyword(s):  
Catalytic Activity ◽  
Hierarchical Structure ◽  
Metal Organic Framework ◽  
Catalytic Performance ◽  
Synthetic Approach ◽  
Phenylphosphonic Acid ◽  
Metal Organic ◽  
Mesoporous Metal ◽  
Organic Framework

MIL-101(Cr), as a prototypical mesoporous metal–organic framework (MOF), can be facially prepared by involving different modulators to fit various demands. In this paper, a range of MIL-101(Cr) products were prepared under similar conditions. It was found that one of the additives, phenylphosphonic acid (PPOA), could give a stable hierarchical structure material. Compared to other MIL-101(Cr)s, though hierarchical MIL-101(Cr) showed less porosity, it gave a better catalytic performance in the oxidation of indene and 1-dodecene.

Synthesis and catalytic performance of hierarchically structured beta zeolites by a dual-functional templating approach

2017 ◽  
Vol 41 (10) ◽  
pp. 3950-3956 ◽  
Author(s):  
Kai Zhang ◽  
Zewei Liu ◽  
Min Wang ◽  
Xin Yan ◽  
Chao Li ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hierarchical Structure ◽  
Catalytic Performance ◽  
Beta Zeolite ◽  
Dual Functional ◽  
Beta Zeolites ◽  
Long Lifetime

A beta zeolite possessing a hierarchical structure with excellent catalytic activity and long lifetime was obtained in the presence of a dual-functional amphiphilic surfactant.

scholarly journals Synthesis, characterization, and catalytic application of hierarchical nano-ZSM-5 zeolite

RSC Advances ◽  
2020 ◽  
Vol 10 (50) ◽  
pp. 29618-29626
Author(s):  
Yanming Jia ◽  
Qinghua Shi ◽  
Junwen Wang ◽  
Chuanmin Ding ◽  
Kan Zhang
Keyword(s):  
Synergistic Effect ◽  
Hierarchical Structure ◽  
Crystal Size ◽  
Strong Acid ◽  
Catalytic Performance ◽  
Acid Amount ◽  
Catalytic Application ◽  
Zeolite P

The crystal size and strong acid amounts of ZSM-5 decrease and the mesopores increase with increasing of KH-560. High MTA catalytic performance could be obtained under synergistic effect of proper strong acid amount, smaller crystal size and abundant hierarchical structure.

Relationships between hierarchical structure and properties in macromolecular systems

1987 ◽  
Vol 45 ◽  
pp. 440-443
Author(s):  
E. Baer
Keyword(s):  
Uniaxial Tension ◽  
Hierarchical Structure ◽  
Inorganic Material ◽  
Hierarchical Structures ◽  
Bone Collagen ◽  
Structure And Properties ◽  
Connective Tissues ◽  
Scale Level ◽  
Fibrous Protein ◽  
Macromolecular Systems

The most advanced macromolecular materials are found in plants and animals, and certainly the connective tissues in mammals are amongst the most advanced macromolecular composites known to mankind. The efficient use of collagen, a fibrous protein, in the design of both soft and hard connective tissues is worthy of comment. Very crudely, in bone collagen serves as a highly efficient binder for the inorganic hydroxyappatite which stiffens the structure. The interactions between the organic fiber of collagen and the inorganic material seem to occur at the nano (scale) level of organization. Epitatic crystallization of the inorganic phase on the fibers has been reported to give a highly anisotropic, stress responsive, structure. Soft connective tissues also have sophisticated oriented hierarchical structures. The collagen fibers are “glued” together by a highly hydrated gel-like proteoglycan matrix. One of the simplest structures of this type is tendon which functions primarily in uniaxial tension as a reinforced elastomeric cable between muscle and bone.

The design and catalytic performance of molybdenum active sites on an MCM-41 framework for the aerobic oxidation of 5-hydroxymethylfurfural to 2,5-diformylfuran

2019 ◽  
Vol 9 (3) ◽  
pp. 811-821 ◽  
Author(s):  
Zhao-Meng Wang ◽  
Li-Juan Liu ◽  
Bo Xiang ◽  
Yue Wang ◽  
Ya-Jing Lyu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Active Sites ◽  
Aerobic Oxidation ◽  
Catalytic Performance ◽  
Mcm 41

The catalytic activity decreases as –(SiO)3Mo(OH)(O) > –(SiO)2Mo(O)2 > –(O)4–MoO.

Optimizing electron density of nickel sulfide electrocatalysts through sulfur vacancy engineering for alkaline hydrogen evolution

2020 ◽  
Vol 8 (35) ◽  
pp. 18207-18214
Author(s):  
Dongbo Jia ◽  
Lili Han ◽  
Ying Li ◽  
Wenjun He ◽  
Caichi Liu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Electron Density ◽  
Rational Design ◽  
Nickel Sulfide ◽  
Catalytic Performance ◽  
Sulfide Catalysts ◽  
Sulfur Vacancy

A novel, rational design for porous S-vacancy nickel sulfide catalysts with remarkable catalytic performance for alkaline HER.

Factor Structure of the Anxiety Sensitivity Profile: Evidence for a Hierarchical Structure

1999 ◽  
Author(s):  
Craig N. Sawchuk ◽  
David F. Tolin ◽  
Suzanne A. Meunier ◽  
Scott O. Lilienfeld ◽  
Jeffrey M. Lohr ◽  
...  
Keyword(s):  
Factor Structure ◽  
Hierarchical Structure ◽  
Anxiety Sensitivity ◽  
Sensitivity Profile
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