Catalytic performance and industrial test of HY zeolite for alkylation of naphthalene and α-tetradecene

2022 ◽  
Author(s):  
Mengke Wang ◽  
Leiting Kuai ◽  
Li Shi ◽  
Xuan Meng ◽  
Naiwang Liu
Keyword(s):  
Catalytic Performance ◽  
Industrial Test ◽  
Manufacturing Industries ◽  
Synthetic Lubricant ◽  
Hy Zeolite

As a synthetic lubricant with excellent properties, alkyl naphthalene is widely used in petrochemical and manufacturing industries. Alkyl naphthalene is formed by naphthalene and α-tetradecene under the action of alkylation...

Catalytic performance of silicalite-1 modified HY zeolite in the hydrolysis of cellulose

2018 ◽  
Vol 46 (12) ◽  
pp. 1447-1453
Author(s):  
Jie YU ◽  
Jing-yun WANG ◽  
Zhen WANG ◽  
Ming-dong ZHOU ◽  
Hai-yan WANG
Keyword(s):  
Catalytic Performance ◽  
Hy Zeolite ◽  
Hydrolysis Of Cellulose ◽  
Hydrolysis Of

Hybrid Catalysts: Internal or External Configuration for Better Catalytic Performance?

1997 ◽  
Vol 497 ◽  
Author(s):  
R. Le Van Mao ◽  
M. A. Saberi ◽  
J. A. Lavigne ◽  
S. Xiao ◽  
G. Denes
Keyword(s):  
High Temperatures ◽  
Catalytic Performance ◽  
Product Diffusion ◽  
Outward Diffusion ◽  
Hy Zeolite ◽  
Hybrid Catalysts ◽  
Diffusion Rates ◽  
Hybrid Configuration ◽  
Direct Incorporation ◽  
Isomer Selectivity

ABSTRACTHybrid catalysts with the external configuration for the cocatalyst showed enhanced product diffusion rates in the n-octane hydrocracking, only if the reaction was carried out at relatively high temperatures. In the n-heptane isomerization, direct incorporation of the Al species into the HY zeolite micropores produced sorption sites which positively affected the selectivity to liquid isomers. Such as internal hybrid configuration resulted in a more important increase in the liquid isomer selectivity than that given by the external hybrid configuration, both systems being designed for better product outward-diffusion.

An efficient Fe2O3/HY catalyst for Friedel–Crafts acylation of m-xylene with benzoyl chloride

RSC Advances ◽  
2014 ◽  
Vol 4 (70) ◽  
pp. 36951-36958 ◽  
Author(s):  
Manman Mu ◽  
Ligong Chen ◽  
Yunlong Liu ◽  
Wangwang Fang ◽  
Yang Li
Keyword(s):  
Catalytic Activity ◽  
Iron Oxide ◽  
Benzoyl Chloride ◽  
Catalytic Performance ◽  
Reaction Parameters ◽  
Hy Zeolite ◽  
Lewis Acidic Sites ◽  
Acidic Sites ◽  
Excellent Catalytic Performance

Iron oxide supported on HY zeolite was prepared and exhibited excellent catalytic performance in the acylation of m-xylene with benzoyl chloride. It was characterized by XRD, BET, XPS, NH3-TPD and Py-IR. The catalytic activity of Fe2O3/HY is enhanced with the increase of Lewis acidic sites. Furthermore, the reaction parameters were optimized. Finally, the catalyst was easily separated reused for five runs without appreciable loss of catalytic activity.

scholarly journals Phylogenetic and Kinetic Characterization of a Suite of Dehydrogenases from a Newly Isolated Bacterium, Strain SG61-1L, That Catalyze the Turnover of Guaiacylglycerol-β-Guaiacyl Ether Stereoisomers

2015 ◽  
Vol 81 (23) ◽  
pp. 8164-8176 ◽  
Author(s):  
Shannu Palamuru ◽  
Nikki Dellas ◽  
Stephen L. Pearce ◽  
Andrew C. Warden ◽  
John G. Oakeshott ◽  
...  
Keyword(s):  
Cell Walls ◽  
Plant Biomass ◽  
Catalytic Performance ◽  
Manufacturing Industries ◽  
Plant Cell Walls ◽  
Chemical Manufacturing ◽  
Potential Applications ◽  
Bacterium Strain ◽  
Alternative Feedstocks

ABSTRACTLignin is a complex aromatic polymer found in plant cell walls that makes up 15 to 40% of plant biomass. The degradation of lignin substructures by bacteria is of emerging interest because it could provide renewable alternative feedstocks and intermediates for chemical manufacturing industries. We have isolated a bacterium, strain SG61-1L, that rapidly degrades all of the stereoisomers of one lignin substructure, guaiacylglycerol-β-guaiacyl ether (GGE), which contains a key β-O-4 linkage found in most intermonomer linkages in lignin. In an effort to understand the rapid degradation of GGE by this bacterium, we heterologously expressed and kinetically characterized a suite of dehydrogenase candidates for the first known step of GGE degradation. We identified a clade of active GGE dehydrogenases and also several other dehydrogenases outside this clade that were all able to oxidize GGE. Several candidates exhibited stereoselectivity toward the GGE stereoisomers, while others had higher levels of catalytic performance than previously described GGE dehydrogenases for all four stereoisomers, indicating a variety of potential applications for these enzymes in the manufacture of lignin-derived commodities.

Effect of Methanol on Catalytic Performance of HY Zeolite for Desulfurization of FCC Gasoline by Alkylation

2012 ◽  
Vol 51 (18) ◽  
pp. 6320-6326 ◽  
Author(s):  
Rong Wang ◽  
Yonghong Li ◽  
Benshuai Guo ◽  
Hongwei Sun
Keyword(s):  
Catalytic Performance ◽  
Hy Zeolite ◽  
Fcc Gasoline

A Comparison of the H3PW12O40/MCM-41 and HY Zeolite for Alkenylation of p-Xylene with Phenylacetylene

2013 ◽  
Vol 634-638 ◽  
pp. 377-381 ◽  
Author(s):  
Zhong Kui Zhao ◽  
Yi Tao Dai
Keyword(s):  
Flow Reactor ◽  
Fixed Bed ◽  
Catalytic Performance ◽  
Hy Zeolite ◽  
Ultrasonic Assisted ◽  
Acidic Sites ◽  
High Dispersity ◽  
Catalytic Stability ◽  
Temperature Programmed ◽  
Mcm 41

The initial activity, selectivity, and especially catalytic stability of mesoporous MCM-41 supported phosphotungstic acid (HPW) prepared by ultrasonic-assisted impregnation (UAI) method and the HY zeolite were contrastively investigated for alkenylation of p-xylene with phenylacetylene in a fixed-bed continuous flow reactor. N2 adsorption-desorption, FT-IR, X-ray diffraction (XRD) and NH3 temperature-programmed (NH3-TPD) desorption characterization techniques were employed to explore the relationship of catalyst nature and catalytic performance in alkenylation. Results illustrate that the as-prepared HPW/MCM-41 catalyst exhibits notably superior catalytic activity, selectivity and stability to microporous HY zeolite, ascribed to its well-ordered mesoporous architecture, appropriate acidic sites and high dispersity of HPW phase.

Effect of alkaline earth metals on catalytic performance of HY zeolite for alkylation of α-methylnaphthalene with long-chain olefins

2006 ◽  
Vol 94 (1-3) ◽  
pp. 105-112 ◽  
Author(s):  
Zhongkui Zhao ◽  
Weihong Qiao ◽  
Xiuna Wang ◽  
Guiru Wang ◽  
Zongshi Li ◽  
...  
Keyword(s):  
Alkaline Earth ◽  
Catalytic Performance ◽  
Alkaline Earth Metals ◽  
Hy Zeolite ◽  
Long Chain

scholarly journals Preparation of CuHY catalyst via solid-state ion exchange method and its catalytic performance in isobutane/2-butene alkylation

RSC Advances ◽  
2021 ◽  
Vol 11 (37) ◽  
pp. 23045-23054
Author(s):  
Xinyan Sun ◽  
Xiang Zhang ◽  
Tao Zheng ◽  
Haiyan Liu ◽  
Rui Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Ion Exchange ◽  
Catalytic Performance ◽  
Exchange Method ◽  
Hy Zeolite ◽  
Ion Exchange Method

CuHY prepared by solid-state ion exchange of HY zeolite with CuCl was used as a catalyst in isobutane/2-butene alkylation. The selectivity of C8 and trimethylpentanes over CuHY in alkylate are improved compared with those of HY.

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.

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