One-step synthesis of hierarchical lamellar H-ZSM-5 zeolite and catalytic performance of methanol to olefin

2021 ◽  
pp. 122132
Author(s):  
Zihan Zhou ◽  
Rongli Jiang ◽  
Xueshuai Chen ◽  
Xingwen Wang ◽  
Huilin Hou
Keyword(s):  
Catalytic Performance ◽  
Methanol To Olefin ◽  
One Step

Positive Role of Synthesis Method and Hard Template on the Catalytic Performance of SAPO-34 in Methanol to Olefin Reaction.

2020 ◽  
Vol 23 ◽  
Author(s):  
Sajjad Rimaz ◽  
Reza Katal
Keyword(s):  
Particle Size ◽  
Synthesis Method ◽  
Catalytic Performance ◽  
Hard Template ◽  
Structure Directing Agent ◽  
Positive Role ◽  
Methanol To Olefin ◽  
Dg Method ◽  
Synthesis Procedure

: In the present study, SAPO-34 particles were synthesized using hydrothermal (HT) and dry gel (DG) conversion methods in the presence of diethyl amine (DEA) as an organic structure directing agent (SDA). Carbon nanotubes (CNT) were used as hard template in the synthesis procedure to introduce transport pores into the structures of the synthesized samples. The synthesized samples were characterized with different methods to reveal effects of synthesis method and using hard template on their structure and catalytic performance in methanol to olefin reaction (MTO). DG conversion method results in smaller particle size in comparison with hydrothermal method, resulting in enhancing catalytic performance. On the other side, using CNT in the synthesis procedure with DG method results in more reduction in particle size and formation of hierarchical structure which drastically improves catalytic performance.

Nature and catalytic performance of PtSAPO-5 molecular sieve catalyst synthesized by one step

1998 ◽  
Vol 15 (5) ◽  
pp. 505-509
Author(s):  
Tian-Cun Xiao ◽  
Hai-Tao Wang ◽  
Yu-Li Lu ◽  
Li-Dun An ◽  
Hong-Li Wang
Keyword(s):  
Molecular Sieve ◽  
Catalytic Performance ◽  
One Step

Synthesis of stacked spherical hierarchical SAPO-34 zeolite and its methanol to olefin catalytic performance

2022 ◽  
pp. 103414
Author(s):  
Zihan Zhou ◽  
Xingwen Wang ◽  
Rongli Jiang ◽  
Xueshuai Chen ◽  
Huilin Hou
Keyword(s):  
Catalytic Performance ◽  
Methanol To Olefin

Preparation of Fe/activated carbon directly from rice husk pyrolytic carbon and its application in catalytic hydroxylation of phenol

RSC Advances ◽  
2015 ◽  
Vol 5 (7) ◽  
pp. 4984-4992 ◽  
Author(s):  
Xian Zhang ◽  
Yaxin Li ◽  
Guiying Li ◽  
Changwei Hu
Keyword(s):  
Activated Carbon ◽  
Rice Husk ◽  
Pyrolytic Carbon ◽  
Catalytic Performance ◽  
Phenol Hydroxylation ◽  
Hydroxylation Of Phenol ◽  
One Step

The loading of iron and the formation of activated carbon were combined to one step and the thus-obtained Fe/activated carbon showed good catalytic performance for phenol hydroxylation.

Hierarchical flower-like Bi2WO6 hollow microspheres: facile synthesis and excellent catalytic performance

RSC Advances ◽  
2015 ◽  
Vol 5 (29) ◽  
pp. 23080-23085 ◽  
Author(s):  
Peigen Zhang ◽  
Jian Zhang ◽  
Anjian Xie ◽  
Shikuo Li ◽  
Jiming Song ◽  
...  
Keyword(s):  
Hollow Spheres ◽  
Catalytic Performance ◽  
Hollow Microspheres ◽  
Solvothermal Process ◽  
Facile Synthesis ◽  
Step Method ◽  
Bismuth Tungstate ◽  
One Step ◽  
Excellent Catalytic Performance

A one step method has been developed for the fabrication of hierarchical flower-like bismuth tungstate (Bi2WO6) hollow spheres via a solvothermal process.

Facile One-Step Dialysis Strategy for Preparation of Porous Silica Nanoparticles with Rough Surface

NANO ◽  
2020 ◽  
Vol 15 (03) ◽  
pp. 2050038
Author(s):  
Zhe Chen ◽  
Jiaqiong Xu ◽  
Xuechen Xiang ◽  
Dongfang Ren ◽  
Ning Chen ◽  
...  
Keyword(s):  
Silica Nanoparticles ◽  
Rough Surface ◽  
Mesoporous Silica Nanoparticles ◽  
Porous Silica ◽  
Catalytic Performance ◽  
Ammonia Solution ◽  
Type Iv ◽  
Organic Surfactant ◽  
One Step ◽  
Adsorption Desorption

In this study, porous silica nanoparticles were fabricated in the absence of organic surfactant template at room temperature by a facile one-step dialysis method. By using a dialysis system comprising an ammonia solution as the dialysate, a series of porous silica nanoparticles with a rough surface (e.g., raspberry-like) were obtained by the initiation of a homogeneous ternary tetraethylsilicate-water-ethanol system with different ammonia solution concentrations. The specific surface area and pore volume of porous nanoparticles were regulated by changing the dialysate concentrations. N2 adsorption–desorption measurements revealed that the porous silica nanoparticles owned both mesopores and micropores and exhibited a type IV isotherm, hence, these nanoparticles can be used as mesoporous silica nanoparticles (MSNs). The Au@MSN nanocomposite can be used as a catalyst for the typical reduction of 4-nitrophenol to 4-aminophenol by NaBH4 and exhibited excellent catalytic performance.

scholarly journals A facile method to fabricate AC/CuO for efficient removal of organic pollutants by adsorption and persulfate-based advanced oxidation processes

2020 ◽  
Author(s):  
Youlin Li ◽  
Yu Hu ◽  
Wenqiao You ◽  
Guangming Zhou ◽  
Guilong Peng
Keyword(s):  
Catalytic Performance ◽  
Catalytic Degradation ◽  
Maximum Adsorption Capacity ◽  
Efficient Removal ◽  
X Ray ◽  
One Step ◽  
Ft Ir ◽  
Degradation Reaction ◽  
The Relationship ◽  
Insight Into

Abstract Activated carbon/CuO (AC/CuO) composites was prepared through a facile one-step hydrothermal method and used as a bifunctional material for adsorption and catalysis degradation of bisphenol A (BPA). The composite was characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and X-ray powder diffraction (XRD). The obtained AC/CuO exhibited excellent adsorption and catalytic performance. The maximum adsorption capacity of BPA on the AC/CuO was 319.03 mg/g according to the Langmuir fitting. At an initial BPA concentration of 20 mg/L, the BPA degradation efficiencies were maintained above 96% for 15 min by using 20 mg/L AC/CuO and 2 mM peroxymonosulfate (PMS). Moreover, the relationship between adsorption and catalytic degradation was also investigated. The results indicated that the pre-adsorption disfavored the degradation reaction. This work not only provides a novel preparation method for AC/CuO catalyst, but also gives a deeper insight into the mechanisms between adsorption and catalytic degradation.

Synthesis of nano-sized SAPO-34 with morpholine-treated micrometer-seeds and their catalytic performance in methanol-to-olefin reactions

2020 ◽  
Vol 589 ◽  
pp. 117314 ◽  
Author(s):  
Chao Sun ◽  
Yaquan Wang ◽  
Aijuan Zhao ◽  
Xiao Wang ◽  
Cui Wang ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Methanol To Olefin

scholarly journals Fabrication of hierarchical ZnSAPO-34 by alkali treatment with improved catalytic performance in the methanol-to-olefin reaction

2018 ◽  
Vol 21 (1) ◽  
pp. 61-70 ◽  
Author(s):  
Chao Sun ◽  
Yaquan Wang ◽  
Zhao Wang ◽  
Hengbao Chen ◽  
Xiao Wang ◽  
...  
Keyword(s):  
Alkali Treatment ◽  
Catalytic Performance ◽  
Methanol To Olefin

One-step melamine-assisted synthesis of graphene-supported AuPt@Au nanocrystals for enhanced catalytic reduction of p-nitrophenol

RSC Advances ◽  
2015 ◽  
Vol 5 (116) ◽  
pp. 96028-96033 ◽  
Author(s):  
Qi Liu ◽  
Yan-Ru Xu ◽  
Ai-Jun Wang ◽  
Jiu-Ju Feng
Keyword(s):  
Catalytic Reduction ◽  
Catalytic Performance ◽  
Core Shell ◽  
Nitrophenol Reduction ◽  
One Step

Core–shell AuPt@Au NCs/rGO was facilely prepared by a one-step melamine-assisted method, which exhibited enhanced catalytic performance for p-nitrophenol reduction.

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