Effect of Divalent Tin on the SnSAPO-5 Molecular Sieve and Its Modulation to Alumina Support To Form a Highly Efficient NiW Catalyst for Deep Hydrodesulfurization of 4,6-Dimethyldibenzothiophene

ACS Catalysis ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 6613-6623 ◽  
Author(s):  
Houxiang Sun ◽  
Huayang Sun ◽  
Xinyue Zhang ◽  
Qianqian Yu ◽  
Penghui Zeng ◽  
...  
Keyword(s):  
Molecular Sieve ◽  
Alumina Support ◽  
Highly Efficient ◽  
Deep Hydrodesulfurization ◽  
Divalent Tin

scholarly journals Tailoring the Stabilization and Pyrolysis Processes of Carbon Molecular Sieve Membrane Derived from Polyacrylonitrile for Ethylene/Ethane Separation

Membranes ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 93
Author(s):  
DaeHun Kim ◽  
YongSung Kwon ◽  
Jung-Hyun Lee ◽  
Seong-Joong Kim ◽  
You-In Park
Keyword(s):  
Molecular Sieve ◽  
Pyrolysis Temperature ◽  
Separation Performance ◽  
Carbon Molecular Sieve ◽  
Alumina Support ◽  
Soaking Time ◽  
Polymer Precursors ◽  
Pre Treatment ◽  
Excellent Thermal Property ◽  
Pyrolysis Processes

For ethylene/ethane separation, a CMS (carbon molecular sieve) membrane was developed with a PAN (polyacrylonitrile) polymer precursor on an alumina support. To provide an excellent thermal property to PAN precursor prior to the pyrolysis, the stabilization as a pre-treatment process was carried out. Tuning the stabilization condition was very important to successfully preparing the CMS membrane derived from the PAN precursor. The stabilization and pyrolysis processes for the PAN precursor were finely tuned, and optimized in terms of stabilization temperature and time, as well as pyrolysis temperature, heating rate, and soaking time. The PAN stabilized at >250 °C showed improved thermal stability and carbon yield. The CMS membrane derived from stabilized PAN showed reasonable separation performance for ethylene permeance (0.71 GPU) and ethylene/ethane selectivity (7.62), respectively. Increasing the pyrolysis temperature and soaking time gave rise to an increase in the gas permeance, and a reduction in the membrane selectivity. This trend was opposite to that for the CMS membranes derived from other polymer precursors. The optimized separation performance (ethylene permeance of 2.97 GPU and ethylene/ethane selectivity of 7.25) could be achieved at the pyrolysis temperature of 650 °C with a soaking time of 1 h. The separation performance of the CMS membrane derived from the PAN precursor was comparable to that of other polymer precursors, and surpassed them regarding the upper bound trade off.

Surface curvature-confined strategy to ultrasmall nickel-molybdenum sulfide nanoflakes for highly efficient deep hydrodesulfurization

Nano Research ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 882-890 ◽  
Author(s):  
Xin Kang ◽  
Jiancong Liu ◽  
Chungui Tian ◽  
Dongxu Wang ◽  
Yaorui Li ◽  
...  
Keyword(s):  
Molybdenum Sulfide ◽  
Surface Curvature ◽  
Highly Efficient ◽  
Deep Hydrodesulfurization

scholarly journals Chemical Separation: Finely Tuned Submicroporous Thin‐Film Molecular Sieve Membranes for Highly Efficient Fluid Separations (Adv. Mater. 22/2020)

2020 ◽  
Vol 32 (22) ◽  
pp. 2070171
Author(s):  
Zain Ali ◽  
Bader S. Ghanem ◽  
Yingge Wang ◽  
Federico Pacheco ◽  
Wojciech Ogieglo ◽  
...  
Keyword(s):  
Thin Film ◽  
Molecular Sieve ◽  
Chemical Separation ◽  
Highly Efficient

A Highly Efficient Oxidation of Cyclohexane over Au/ZSM-5 Molecular Sieve Catalyst with Oxygen as Oxidant.

ChemInform ◽  
2004 ◽  
Vol 35 (34) ◽  
Author(s):  
Rui Zhao ◽  
Dong Ji ◽  
Gaomeng Lv ◽  
Guang Qian ◽  
Liang Yan ◽  
...  
Keyword(s):  
Molecular Sieve ◽  
Highly Efficient

scholarly journals Highly efficient synthesis of LTA-type aluminophosphate molecular sieve by improved ionothermal method

2016 ◽  
Vol 40 (3) ◽  
pp. 2444-2450 ◽  
Author(s):  
Xinhong Zhao ◽  
Jiangbo Zhao ◽  
Chang-Yang Chiang ◽  
Zhengshan Li ◽  
Yu Zhao ◽  
...  
Keyword(s):  
Molecular Sieve ◽  
Efficient Synthesis ◽  
Highly Efficient

An LTA-type aluminophosphate molecular sieve was synthesized under the conditions of a low ILs/Al2O3 ratio.

scholarly journals Finely Tuned Submicroporous Thin‐Film Molecular Sieve Membranes for Highly Efficient Fluid Separations

2020 ◽  
Vol 32 (22) ◽  
pp. 2001132 ◽  
Author(s):  
Zain Ali ◽  
Bader S. Ghanem ◽  
Yingge Wang ◽  
Federico Pacheco ◽  
Wojciech Ogieglo ◽  
...  
Keyword(s):  
Thin Film ◽  
Molecular Sieve ◽  
Highly Efficient

A highly efficient oxidation of cyclohexane over Au/ZSM-5 molecular sieve catalyst with oxygen as oxidant

2004 ◽  
pp. 904 ◽  
Author(s):  
Rui Zhao ◽  
Dong Ji ◽  
Gaomeng Lv ◽  
Guang Qian ◽  
Liang Yan ◽  
...  
Keyword(s):  
Molecular Sieve ◽  
Highly Efficient
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