CTAB-assisted size controlled synthesis of SAPO-34 and its contribution toward MTO performance

2018 ◽  
Vol 47 (29) ◽  
pp. 9861-9870 ◽  
Author(s):  
Syed ul Hasnain Bakhtiar ◽  
Xiaotong Wang ◽  
Sher Ali ◽  
Fulong Yuan ◽  
Zhibin Li ◽  
...  
Keyword(s):  
Controlled Synthesis ◽  
Pore System ◽  
Light Olefin ◽  
Diffusion Limitations ◽  
Small Pore ◽  
Methanol To Olefin ◽  
Olefin Selectivity ◽  
Size Controlled

SAPO-34 shows higher light olefin selectivity in the reaction of methanol to olefin (MTO), but its small pore system implies diffusion limitations to bigger molecular products and results in coking too.

scholarly journals Size-Controlled Synthesis of Nano-Zeolites and Their Application to Light Olefin Synthesis

2012 ◽  
Vol 16 (3) ◽  
pp. 148-163 ◽  
Author(s):  
Teruoki Tago ◽  
Hiroki Konno ◽  
Yuta Nakasaka ◽  
Takao Masuda
Keyword(s):  
Controlled Synthesis ◽  
Light Olefin ◽  
Olefin Synthesis ◽  
Size Controlled

Study of coke deposition phenomena on the SAPO_34 catalyst and its effects on light olefin selectivity during the methanol to olefin reaction

RSC Advances ◽  
2015 ◽  
Vol 5 (100) ◽  
pp. 81965-81980 ◽  
Author(s):  
Reza Bagherian Rostami ◽  
Mohammad Ghavipour ◽  
Zuoxing Di ◽  
Yao Wang ◽  
Reza Mosayyebi Behbahani
Keyword(s):  
Hydrogen Transfer ◽  
Catalyst Deactivation ◽  
Coke Formation ◽  
Great Influence ◽  
Product Distribution ◽  
Coke Deposition ◽  
Light Olefin ◽  
Methanol To Olefin ◽  
Olefin Selectivity ◽  
Transfer Index

Hydrogen transfer index was found to be a key parameter in prediction of coke deposition behavior. A good macro-model of product distribution with coke formation is provided. Temperature had a great influence on distribution of coke species and catalyst deactivation.

scholarly journals Fischer–Tropsch Synthesis for Light Olefins from Syngas: A Review of Catalyst Development

Reactions ◽  
2021 ◽  
Vol 2 (3) ◽  
pp. 227-257
Author(s):  
Arash Yahyazadeh ◽  
Ajay K. Dalai ◽  
Wenping Ma ◽  
Lifeng Zhang
Keyword(s):  
Pore Size ◽  
Crystal Size ◽  
Tropsch Synthesis ◽  
Light Olefins ◽  
Face Centered Cubic ◽  
Fischer Tropsch ◽  
Light Olefin ◽  
Structure Transition ◽  
Fischer Tropsch Synthesis ◽  
Olefin Selectivity

Light olefins as one the most important building blocks in chemical industry can be produced via Fischer–Tropsch synthesis (FTS) from syngas. FT synthesis conducted at high temperature would lead to light paraffins, carbon dioxide, methane, and C5+ longer chain hydrocarbons. The present work focuses on providing a critical review on the light olefin production using Fischer–Tropsch synthesis. The effects of metals, promoters and supports as the most influential parameters on the catalytic performance of catalysts are discussed meticulously. Fe and Co as the main active metals in FT catalysts are investigated in terms of pore size, crystal size, and crystal phase for obtaining desirable light olefin selectivity. Larger pore size of Fe-based catalysts is suggested to increase olefin selectivity via suppressing 1-olefin readsorption and secondary reactions. Iron carbide as the most probable phase of Fe-based catalysts is proposed for light olefin generation via FTS. Smaller crystal size of Co active metal leads to higher olefin selectivity. Hexagonal close-packed (HCP) structure of Co has higher FTS activity than face-centered cubic (FCC) structure. Transition from Co to Co3C is mainly proposed for formation of light olefins over Co-based catalysts. Moreover, various catalysts’ deactivation routes are reviewed. Additionally, techno-economic assessment of FTS plants in terms of different costs including capital expenditure and minimum fuel selling price are presented based on the most recent literature. Finally, the potential for global environmental impacts associated with FTS plants including atmospheric and toxicological impacts is considered via lifecycle assessment (LCA).

scholarly journals A novel route to size-controlled MIL-53(Fe) metal–organic frameworks for combined chemodynamic therapy and chemotherapy for cancer

RSC Advances ◽  
2021 ◽  
Vol 11 (18) ◽  
pp. 10540-10547
Author(s):  
Anxia Li ◽  
Xiaoxin Yang ◽  
Juan Chen
Keyword(s):  
Drug Delivery ◽  
Therapeutic Approach ◽  
Metal Organic Frameworks ◽  
Ionic Surfactant ◽  
Controlled Synthesis ◽  
New Approach ◽  
Metal Organic ◽  
Size Controlled

In this study, we reported a new approach for the size-controlled synthesis of uniform iron(iii)-based MIL-53 nanocrystals using the non-ionic surfactant PVP. A combinational therapeutic approach was presented for drug delivery and ROS therapy.

Shape and size controlled synthesis of uniform iron oxide nanocrystals through new non-hydrolytic routes

2016 ◽  
Vol 27 (32) ◽  
pp. 324002 ◽  
Author(s):  
Wenlu Li ◽  
Seung Soo Lee ◽  
Jiewei Wu ◽  
Carl H Hinton ◽  
John D Fortner
Keyword(s):  
Iron Oxide ◽  
Controlled Synthesis ◽  
Size Controlled ◽  
Shape And Size

Size controlled synthesis of silver sulfide nanostructures by multi-solvent thermal decomposition method

2017 ◽  
Vol 468 ◽  
pp. 119-124 ◽  
Author(s):  
Mohamed Mathar Sahib Ibrahim Khaleelullah ◽  
Thangaraju Dheivasigamani ◽  
Prakash Natarajan ◽  
Yuriko Masuda ◽  
Wataru Inami ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Decomposition Method ◽  
Silver Sulfide ◽  
Controlled Synthesis ◽  
Thermal Decomposition Method ◽  
Size Controlled

Size-Controlled Synthesis of Magnetite Nanoparticles

2002 ◽  
Vol 124 (28) ◽  
pp. 8204-8205 ◽  
Author(s):  
Shouheng Sun ◽  
Hao Zeng
Keyword(s):  
Magnetite Nanoparticles ◽  
Controlled Synthesis ◽  
Size Controlled

Highly Size-Controlled Synthesis of Metal Nanoclusters by Inert-Gas Condensation for Nano-Devices

2010 ◽  
Vol 10 (5) ◽  
pp. 3667-3670 ◽  
Author(s):  
Il-Suk Kang ◽  
Hyun-Sang Seo ◽  
Deuk-Han Kim ◽  
Taek-Yeong Lee ◽  
Jun-Mo Yang ◽  
...  
Keyword(s):  
Inert Gas ◽  
Controlled Synthesis ◽  
Metal Nanoclusters ◽  
Gas Condensation ◽  
Inert Gas Condensation ◽  
Size Controlled

Size-Controlled Synthesis of Conjugated Polymer Nanoparticles in Confined Nanoreactors

2014 ◽  
Vol 126 (51) ◽  
pp. 14368-14372 ◽  
Author(s):  
Sheng Deng ◽  
Jian Zhi ◽  
Xianmei Zhang ◽  
Qingqing Wu ◽  
Yun Ding ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Polymer Nanoparticles ◽  
Controlled Synthesis ◽  
Conjugated Polymer Nanoparticles ◽  
Size Controlled
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