Synthesis and characterization of hierarchical ZSM-5 zeolite using various templates as cracking catalysts

Zahara, Zayda Faizah; Krisnandi, Y. K.; Wibowo, Wahyu Catur; Nurani, D. A.; Rahayu, D. U. C.; Haerudin, Hery

doi:10.1063/1.5064085

Cited by 12 publications

(7 citation statements)

References 11 publications

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“…Figure 5 presents the XRD pattern of the as‐synthesized ZSM‐5 analyzed in the 2 θ range from 0° to 50°. The diffractogram show 2 θ peaks at 22°–29°, corresponding to significant planes (501, 303, and 503), which indicates that sub nanocrystals could possess the primary structure of MFI‐zeolite type 39,40 …”

Section: Resultsmentioning

confidence: 99%

Quarternized polysulfone/ZSM‐5 zeolite composite anion exchange membrane separators for aluminum‐air battery

Lekoane

Msomi

2023

J of Applied Polymer Sci

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A membrane is a critical component of an Al‐air battery because it provides ion transport and ensures separation of the anode and cathode. In this work, a series of quaternized polysulfone (QPSF) membrane blended with ZSM‐5 zeolite anion exchange membranes (AEMs) were fabricated by solution casting to be used as separators in Al‐air batteries. All membranes showed moderate to excellent water uptake (WU), swelling ratio, ion exchange capacity (IEC), and ion conductivity measurements (IC). Incorporation of ZSM‐5 zeolite resulted in hydrophilicity and improved WU, with QPSF/3 wt% ZSM‐5 retaining 114% water at room temperature. The QPSF/3 wt% ZSM‐5 composite membrane was the best performing membrane with the IEC and the highest hydration number of 2.85 mmol g−1, 2.23, and a maximum of IC of 229.85 mS cm−1 at room temperature, respectively. QPSF/3 wt% ZSM‐5 retained 65% of its original IC in an alkaline medium after 7 days. QPSF/3 wt% ZSM‐5 exhibited a stable discharge voltage of 1.3 V and a specific capacity of 11,716 mAh/gAl in a laboratory fabricated Al‐air cell. This study provides an excellent anion exchange composite membrane separator candidate for Al‐air battery applications.

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Section: Resultsmentioning

confidence: 99%

Quarternized polysulfone/ZSM‐5 zeolite composite anion exchange membrane separators for aluminum‐air battery

Lekoane

Msomi

2023

J of Applied Polymer Sci

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“…The catalytic activity of HY zeolites was tested using micro activity test (MAT) reactor located at PT Pertamina, following procedure reported in [18]. Approximately 0.5 g of catalyst was placed into a silica reactor, purged with N 2 gas to remove all impurities at a temperature of 573 K for 30 min, followed by injection of 1.35 g of n-hexadecane feed into the reactor for 80 s. After the reaction finished, the gas and liquid products were collected and characterized with GC-RGA and GC simulated distillation, respectively.…”

Section: Catalytic Cracking Testmentioning

confidence: 99%

“…However, in our previous synthesis, synthetic aluminate or silicate sources, not including seed, are still being added. For example, synthetic precursors have been added in the synthesis of NaY and ZSM-5 [16][17][18]. In this work, the synthesis of NaY from Indonesian kaolin as raw materials for precursors using seeding method has been carried out without the addition of synthetic precursors for aluminates and silicates.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Crystalline NaY-Zeolite from Belitung Kaolin as Catalyst for n-Hexadecane Cracking

et al. 2019

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Crystalline sodium Y (NaY) zeolite has been synthesized using alternative natural source of aluminate and silicate, extracted from natural Belitung kaolin. Prior to use, the natural kaolin was pretreated to obtain fragmented metakaolin and extracted silica. Synthesis was conducted with the addition of NaY gel (two types of NaY seeds were used, prepared from colloidal sillica or sodium silica water) using hydrothermal method for 21 h at 100 °C. The characterization on the as-synthesized zeolites confirmed that the one prepared using colloidal silica-seed has closer structure similarity to NaY zeolite that was synthesized using pro analysis silicate and aluminate sources. Thus, the rest of the synthesis of NaY was carried out using colloidal silica-NaY seed. The NaY zeolites then were converted to HY, through ammonium-exchange followed by calcination, to be tested as cracking catalysts using n-hexadecane as a probe molecule. It shows that HY from metakaolin and extracted silica gives high performance, i.e., n-hexadecane conversion of 58%–64%, also C5-C12 percentage yield and selectivity of 56%–62% and 98%. This work has shown the potential to utilize kaolin as alternative silicate aluminate sources for crystalline zeolite synthesis and to obtain inexpensive and environmentally friendly catalyst materials.

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“…[6] The mesoporous materials are synthesized by hydrothermal method [7,8] with autogeneous pressure. Mesoporous materials such as ZSM-5 (1.789 nm), [9] MSN (2.4 nm) [10] and SBA-15 (3.6 nm) [11] were synthesized by TETA as a template. The pore size was obtained upto 4 nm.…”

Section: Introductionmentioning

confidence: 99%

Metal ion effect on pore size reduction in Mesoporous Aluminosilicate in the presence of TETA as a template and its catalytic performance of CO₂ decomposition at lower temperature

Gowri,

Chellapandian

2024

ChemistrySelect

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Mesoporous AlSiO4‐33 and Co2+ incorporated Co‐AlSiO4‐15 catalysts are synthesized at room temperature using Triethylenetetramine (TETA) as a template for the purpose of CO2 decomposition. The prepared materials are characterized by FT‐IR, XRD, UV‐DRS, BET, TGA, 27Al NMR and TEM. Based on XRD data, the materials are crystalline in nature. The mesoporosity of the materials with pore sizes of 33 nm (AlSiO4) and 15 nm (Co‐AlSiO4) are confirmed by BET analysis. Consequently, we designated AlSiO4 and Co‐AlSiO4 as AlSiO4‐33 and Co‐AlSiO4‐15. This lowered diameter value for Co‐AlSiO4‐15 may be due to the octahedral coordination of Co2+ ion. In the tetrahedral aluminosilicate framework, the template directs the Co2+ towards octahedral coordination. Due to the octahedral coordination, the bond angle between Si−O−Co is reduced. Due to this reduction, the pore size reduced from 33 nm (AlSiO4‐33) to 15 nm (Co‐AlSiO4‐15). These two catalysts are applied for CO2 decomposition. AlSiO4‐33 is active at 100 °C while Co‐AlSiO4‐6 is active at 150 °C. Co‐AlSiO4‐15 has produced more oxygen than AlSiO4‐33. It may be due to the Co‐AlSiO4‐15 has more bronsted acidic sites than the AlSiO4‐33. Co‐AlSiO4‐15 is reduced the activation energy 67 % while AlSiO4‐33 is reduced 78 % for CO2 decomposition at lower temperatures compare to conventional methods.

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Synthesis and characterization of hierarchical ZSM-5 zeolite using various templates as cracking catalysts

Cited by 12 publications

References 11 publications

Quarternized polysulfone/ZSM‐5 zeolite composite anion exchange membrane separators for aluminum‐air battery

Quarternized polysulfone/ZSM‐5 zeolite composite anion exchange membrane separators for aluminum‐air battery

Synthesis and Characterization of Crystalline NaY-Zeolite from Belitung Kaolin as Catalyst for n-Hexadecane Cracking

Metal ion effect on pore size reduction in Mesoporous Aluminosilicate in the presence of TETA as a template and its catalytic performance of CO₂ decomposition at lower temperature

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Synthesis and characterization of hierarchical ZSM-5 zeolite using various templates as cracking catalysts

Cited by 12 publications

References 11 publications

Quarternized polysulfone/ZSM‐5 zeolite composite anion exchange membrane separators for aluminum‐air battery

Quarternized polysulfone/ZSM‐5 zeolite composite anion exchange membrane separators for aluminum‐air battery

Synthesis and Characterization of Crystalline NaY-Zeolite from Belitung Kaolin as Catalyst for n-Hexadecane Cracking

Metal ion effect on pore size reduction in Mesoporous Aluminosilicate in the presence of TETA as a template and its catalytic performance of CO2 decomposition at lower temperature

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Metal ion effect on pore size reduction in Mesoporous Aluminosilicate in the presence of TETA as a template and its catalytic performance of CO₂ decomposition at lower temperature