Enhanced Catalytic Performance of the FCC Catalyst with an Alumina Matrix Modified by the Zeolite Y Structure-Directing Agent

2019 ◽  
Vol 58 (14) ◽  
pp. 5455-5463
Author(s):  
Mengjie Xie ◽  
Yifang Li ◽  
Ubong Jerome Etim ◽  
He Lou ◽  
Wei Xing ◽  
...  
Keyword(s):  
Zeolite Y ◽  
Catalytic Performance ◽  
Alumina Matrix ◽  
Structure Directing Agent ◽  
Fcc Catalyst

Dynamic synthesis route of zeolite Y with kaolin to improve yield

2018 ◽  
Vol 7 (1) ◽  
pp. 23-29
Author(s):  
Yuting Bai ◽  
Wenyuan Wu ◽  
Xue Bian
Keyword(s):  
Zeolite Y ◽  
Catalytic Performance ◽  
X Ray Diffraction ◽  
Structure Directing Agent ◽  
Relative Crystallinity ◽  
X Ray ◽  
Zeolite Nay ◽  
Dynamic Synthesis ◽  
Crystallization Method ◽  
Aging Conditions

Abstract:Zeolite NaY was successfully synthesized by a dynamic hydrothermal crystallization method with water glass and kaolin from Yunnan Provice of China. The products were modified to serve as hydrocracking catalysts. The influences of aging conditions of the structure-directing agent and crystallization methods were examined. The compositions and microstructures of zeolites were characterized by field emission scanning electron microscopy, X-ray diffraction and Brunauer-Emmett-Teller (BET). The catalytic performance for hydrocracking was briefly evaluated. The results showed that appropriate aging temperature and time of structure-directing agent were beneficial to nucleation. Combined with static crystallization, the yield of zeolite NaY prepared by the dynamic crystallization method was significantly improved, relative crystallinity increased from 46.91% to 74.18%, and conversion in hydrocracking accordingly increased from 39.58% to 55.93%.

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.

scholarly journals An SEM Investigation of the Pozzolanic Activity of a Waste Catalyst from Oil Refinery

2012 ◽  
Vol 18 (S5) ◽  
pp. 75-76
Author(s):  
C. Costa ◽  
P. Marques ◽  
P. A. Carvalho
Keyword(s):  
Zeolite Y ◽  
Active Phase ◽  
Pozzolanic Reaction ◽  
High Reactivity ◽  
Oil Refinery ◽  
Engineering Properties ◽  
Partial Replacement ◽  
Reaction Products ◽  
Fcc Catalyst ◽  
Cement Based Materials

The most active phase of the fluid catalytic cracking (FCC) catalyst, used in oil refinery, is zeolite-Y which is an aluminosilicate with a high internal and external surface area responsible for its high reactivity. Waste FCC catalyst is potentially able to be reused in cement-based materials - as an additive - undergoing a pozzolanic reaction with calcium hydroxide (Ca(OH)2) formed during cement hydration. This reaction produces additional strength-providing reaction products i.e., calcium silicate hydrate (C-S-H) and hydrous calcium aluminates (C-A-H) which exact chemical formula and structure are still unknown. Partial replacement of cement by waste FCC catalyst has two key advantages: (1) lowering of cement production with the associated pollution reduction as this industry represents one of the largest sources of man-made CO2 emissions, and (2) improving the mechanical properties and durability of cement-based materials. Despite these advantages, there is a lack of fundamental knowledge on pozzolanic reaction mechanisms as well as spatial distribution of porosity and solid phases interactions at the microstructural level and consequently their relationship with macroscopical engineering properties of catalyst/cement blends.

Facile Synthesis of Mesoporous Zeolite Y with Improved Catalytic Performance for Heavy Oil Fluid Catalytic Cracking

2014 ◽  
Vol 53 (8) ◽  
pp. 3406-3411 ◽  
Author(s):  
Junsu Jin ◽  
Chaoyun Peng ◽  
Jiujiang Wang ◽  
Hongtao Liu ◽  
Xionghou Gao ◽  
...  
Keyword(s):  
Heavy Oil ◽  
Catalytic Cracking ◽  
Zeolite Y ◽  
Catalytic Performance ◽  
Fluid Catalytic Cracking ◽  
Mesoporous Zeolite ◽  
Facile Synthesis

Synthesis of RE Y zeolite for formulation of FCC catalyst and the catalytic performance in cracking of n-hexadecane

2016 ◽  
Vol 43 (1) ◽  
pp. 467-479 ◽  
Author(s):  
Nurudeen Salahudeen ◽  
Abdulkarim S. Ahmed ◽  
Ala’a H. Al-Muhtaseb ◽  
Mohammed Dauda ◽  
Baba Y. Jibril ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Y Zeolite ◽  
Fcc Catalyst

Mesostructured zeolite Y—high hydrothermal stability and superior FCC catalytic performance

2012 ◽  
Vol 2 (5) ◽  
pp. 987 ◽  
Author(s):  
Javier García-Martínez ◽  
Marvin Johnson ◽  
Julia Valla ◽  
Kunhao Li ◽  
Jackie Y. Ying
Keyword(s):  
Zeolite Y ◽  
Catalytic Performance ◽  
Hydrothermal Stability

Synthesis and catalytic performance of zeolite-Y supported on silicon carbide in n-heptane cracking

2020 ◽  
Vol 608 ◽  
pp. 117866
Author(s):  
Aasif A. Dabbawala ◽  
Balasubramanian V. Vaithilingam ◽  
Hemant Mittal ◽  
Yasser Al Wahedi ◽  
Shaihroz Khan ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Zeolite Y ◽  
Catalytic Performance

Microwave intensified synthesis of Zeolite-Y from spent FCC catalyst after acid activation

2019 ◽  
Vol 776 ◽  
pp. 437-446 ◽  
Author(s):  
Thiquynhxuan Le ◽  
Qi Wang ◽  
A.V. Ravindra ◽  
Xiteng Li ◽  
Shaohua Ju
Keyword(s):  
Zeolite Y ◽  
Acid Activation ◽  
Spent Fcc Catalyst ◽  
Fcc Catalyst
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