Design and synthesis of core-shell structured meso-Cu-SSZ-13@mesoporous aluminosilicate catalyst for SCR of NO with NH3: Enhancement of activity, hydrothermal stability and propene poisoning resistance

2016 ◽  
Vol 195 ◽  
pp. 48-58 ◽  
Author(s):  
Tao Zhang ◽  
Feng Qiu ◽  
Junhua Li
Polymers ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1084
Author(s):  
Kaimin Chen ◽  
Lan Cao ◽  
Ying Zhang ◽  
Kai Li ◽  
Xue Qin ◽  
...  

Stimuli-responsive nanoparticles are among the most popular research topics. In this study, two types of core-shell (polystyrene with a photoiniferter (PSV) as the core and diblock as the shell) polymer brushes (PSV@PNIPA-b-PAA and PSV@PAA-b-PNIPA) were designed and prepared using surface-initiated photoiniferter-mediated polymerization (SI-PIMP). Moreover, their pH- and temperature-stimuli responses were explored by dynamic light scattering (DLS) and turbidimeter under various conditions. The results showed that the conformational change was determined on the basis of the competition among electrostatic repulsion, hydrophobic interaction, hydrogen bonding, and steric hindrance, which was also confirmed by protein adsorption experiments. These results are not only helpful for the design and synthesis of stimuli-responsive polymer brushes but also shed light on controlled protein immobilization under mild conditions.


RSC Advances ◽  
2016 ◽  
Vol 6 (65) ◽  
pp. 60983-60995 ◽  
Author(s):  
M. Selvaraj

A green and recyclable AlSMSN material synthesised with enhanced hydrothermal stability has a rich tetrahedral Al ion coordination and reveals an unprecedented catalytic activity in t-butylation of phenol, among the other mesoporous catalysts.


2009 ◽  
Vol 48 (20) ◽  
pp. 9723-9731 ◽  
Author(s):  
Wenjin Zhang ◽  
Guanjiao Chen ◽  
Jian Wang ◽  
Bang-Ce Ye ◽  
Xinhua Zhong

2017 ◽  
Vol 98 ◽  
pp. 47-51 ◽  
Author(s):  
Shihui Li ◽  
Bichun Huang ◽  
Chenglong Yu
Keyword(s):  
Nh3 Scr ◽  

2020 ◽  
Vol 11 (2) ◽  
pp. 315-325 ◽  
Author(s):  
Sabine Schneider ◽  
Falco Jung ◽  
Olga Mergel ◽  
Janik Lammertz ◽  
Anne C. Nickel ◽  
...  

Modelling and synthesis go hand in hand to efficiently engineer copolymer microgels with various architectures: core–shell structures (with ferrocene mainly in the core or in the shell) and also microgels with homogeneous comonomer distribution.


2015 ◽  
Vol 258 ◽  
pp. 11-16 ◽  
Author(s):  
Zhenguo Li ◽  
Junhua Li ◽  
Shuangxi Liu ◽  
Xiaoning Ren ◽  
Jie Ma ◽  
...  

Catalysts ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 456 ◽  
Author(s):  
Donggun Lee ◽  
Hyeona Kim ◽  
Young-Kwon Park ◽  
Jong-Ki Jeon

This study is aimed at preparing C8–C16 alkene through oligomerization of a butene mixture using nickel oxide supported on mesoporous aluminosilicate. Mesoporous aluminosilicate with an ordered structure was successfully synthesized from HZSM-5 zeolite by combining a top-down and a bottom-up method. MMZZSM-5 catalyst showed much higher butene conversion and C8–C16 yield in the butene oligomerization reaction than those with HZSM-5. This is attributed to the pore geometry of MMZZSM-5, which is more beneficial for internal diffusion of reactants, reaction intermediates, and products. The ordered channel-like mesopores were maintained after the nickel-loading on MMZZSM-5. The yield for C8–C16 hydrocarbons over NiO/MMZZSM-5 was higher than that of MMZZSM-5 catalyst, which seemed to be due to higher acid strength from a higher ratio of Lewis acid to Brønsted acid. The present study reveals that a mesoporous NiO/MMZZSM-5 catalyst with a large amount of Lewis acid sites is one of the potential catalysts for efficient generation of aviation fuel through the butene oligomerization.


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