(721c) Pt Based Bimetallic and Trimetallic Catalysts for Ethane Aromatization | AIChE

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(721c) Pt Based Bimetallic and Trimetallic Catalysts for Ethane Aromatization

Authors 

Shan, J. - Presenter, NICE AMERICA RESEARCH, Inc

Junjun Shan Junjun Shan 2 9 2019-04-12T16:59:00Z 2019-04-12T16:59:00Z 1 334 1905 15 4 2235 16.00

Clean Clean false false false false EN-US ZH-CN X-NONE


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normal">Pt
based bimetallic and trimetallic catalysts for ethane aromatization

Junjun shana,*, Hui Wanga, Lisa Nguyena, Fu-Kuo Chiangb, Jihong Chenga

margin-bottom:0in;margin-left:0in;margin-bottom:.0001pt;text-align:center;
line-height:normal">a NICE America Research Inc, 2091 Stierlin
Ct, Mountain View, California USA 94043

margin-bottom:0in;margin-left:0in;margin-bottom:.0001pt;text-align:center;
line-height:normal">b National Institute of Clean-and-Low- bold">Carbon Energy(NICE), Future Science & Technology
City, Changping District, Beijing China
102211

margin-bottom:0in;margin-left:0in;margin-bottom:.0001pt;text-align:center;
line-height:normal">*Corresponding
author:
shanjunjun@nicenergy.com

The
shale-gas boom in the United States provides an opportunity to develop advanced
catalysts and processes to catalyze the direct conversion of light alkanes,
major constituents of shale-gas, into value-added chemicals. The conversion of
ethane, one of the major constituents of shale-gas, into aromatics is of great
interest as a useful way for shale-gas utilization [1].

It
has been reported that Pt/ZSM-5 is active for ethane aromatization [1].
However, the quick deactivation of the catalysts due to the coke formation, and
relatively high methane selectivity remain as the two unsolved issues of this
catalyst. We have found that adding a certain amount of second metal to Pt
forming bimetallic catalysts, or two additional metals to Pt forming
trimetallic catalysts can dramatically improve the catalytic performance of
Pt/ZSM-5 in terms of suppressing coke and reducing methane selectivity. These
second and third metals include Zn, Fe, Sn, Ga, Ni and others. Our
characterization data demonstrated that for the monometallic Pt/ZSM-5 catalyst,
Pt forms atomically dispersed subnanometer nanoclusters within the micropores
of zeolite, which may exhibit unique catalytic activity in many reactions [2].
Furthermore, our work also shows that adding second or third metals to Pt
forming bimetallic and trimetallic catalysts, followed by desired activation
procedures, not only change the geometric structure of Pt species, in term of
Pt dispersion and location, but also modify the electronic structure of Pt
species. Such effects play a key role in the improving the catalytic
performance of the parent Pt/ZSM-5 catalyst. mso-bidi-font-size:12.0pt;color:black;mso-themecolor:text1;mso-font-kerning:
12.0pt">

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inter-ideograph"> mso-fareast-font-family:ËÎÌå;mso-fareast-theme-font:minor-fareast;color:black;
mso-themecolor:text1;mso-font-kerning:12.0pt">References

margin-bottom:.0001pt;text-indent:-13.5pt">1.  Y. Xiang, H. Wang, J. Cheng, J. Matsubu, Catal. Sci. Technol., 8
(2018) 1500-1516.

2.  L. Liu, U. D¨ªaz, R. Arenal, G. Agostini,
P. Concepci¨®n, A. Corma, Nature Mater., 16 (2017) 132-138.

Topics 

Hydrocarbons

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