Partial Oxidation of Methane to Methanol on Cobalt Oxide-Modified Hierarchical ZSM-5

Krisnandi, Y. K.; Nurani, D. A.; Reza, Muhammad; Samodro, Bayu Adi; Suwardiyanto,; Susianto, Nirwan; Putrananda, Arbhyando T.; Saragi, I. R.; Umar, Aminah; Choi, Sung-Min; Howe, Russell F.

doi:10.5772/intechopen.86133

Cited by 7 publications

(3 citation statements)

References 28 publications

(35 reference statements)

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“…89-1421. 46,47 The synthesized sample showed exact ZSM-5 XRD patterns, with no other impurity peak observed, highlighting the high purity of the products. On the other hand, the ZSM-5 product showed the strong driving action of silica in zeolite crystallization.…”

Section: Resultsmentioning

confidence: 84%

Study of Preventing the Alumina Dissolution and Metal Ion Migration in the Ceramic Membrane Divided-Electrochemical Cell Worked with High Acid-Base Electrolyte

Silambarasan

Moon

2021

J. Electrochem. Soc.

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The separator plays a key role in enhancing the performance of an electrochemical reactor. Polymeric ion-exchange membrane-like Nafion has been commercialized, but it has some disadvantages, such as durability and ion migration between the half-cells. In the present work, a ZSM-5 membrane (Pore size 0.55 nm) prepared by secondary growth on core–shell tubular ceramic supports was tested by measuring the stability and performing migration analysis in each half-cell of a divided tubular electrolysis reactor in high alkaline-acid aqueous solutions. An approximately 9000 h core–shell Zeolite tubular membrane (CSZTM) was robust when functioned at room temperatures in high acid and alkaline media because no obvious change in surface morphology was observed by scanning electron microscopy, X-ray diffraction, inductively coupled plasma—optical emission spectroscopy mass loss percent, and open porosity, and there were no large differences in the patterns. Ion migration was analyzed for more than 500 h in a divided tubular cell using CSZTM, and no migration was observed in both sides according to UV–visible spectroscopy. CSZTM was synthesized successfully, and its stability and ion migration were examined in an acid-alkaline aqueous solution in an electrochemical reactor.

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Section: Resultsmentioning

confidence: 84%

Study of Preventing the Alumina Dissolution and Metal Ion Migration in the Ceramic Membrane Divided-Electrochemical Cell Worked with High Acid-Base Electrolyte

Silambarasan

Moon

2021

J. Electrochem. Soc.

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“…This activation process is carried out by heating using NH4 + , where on heating it will become NH3 vapor and allow H + to bind to ZSM-5 to form H-ZSM-5. The loss of Na cations produces more templates or pores thereby increasing catalytic activity 23,32 . In contrast to dealumination, the dealumination process not only increases the catalyst surface area to 166 m 2 /g in HZSM-5 Hierarchy but also increases the pore radius to 1,591 and clarifies the micro, meso, and macro pore levels with a high number of mesopores, so it can be said to be a hierarchical process succeed.…”

Section: 𝐷 = K λ 𝛽 Cos 𝜃mentioning

confidence: 99%

Dealumination Effect on ZSM-5 as a Bimetal Fe-Co Support for The Oxidative Desulfurization Process Catalyst

Adhani,

Susanto,

Nasikin

2024

Valensi

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Petroleum fuel is still the main energy source today but causes environmental problems such as SOx gas emissions. The Oxidative Desulfurization (ODS) method removes sulfur from fuel under mild conditions. ZSM-5 is a catalyst framework considered promising in the ODS process but the small pores cause a steric barrier. The hydrophobic, mesoporous Fe-Co/ZSM-5Hierarchy catalyst was designed using the dealumination method with steam treatment to overcome the steric barrier and biphasic hindrances which are problems in this ODS process. The Fe-Co/ZSM-5Hierarchy catalyst is effective for the ODS process at a temperature of 45 °C, 45 min, the amount of catalyst used is 0.2 g, oxidant at an O/S ratio of 2, and without mass transfer agents. The embedded Fe-Co ratio shows effective mass activity by providing a TOF number of 205 h-1 on the Fe-Co(5)/ZSM-5 Hierarchy and 157 h-1 on the Fe-Co(15)/ZSM-5 Hierarchy catalyst.

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“…Moreover, Krisnandi et al 8) reported Co-oxide modified ZSM-5 were prepared through wet impregnation method. Incipient wet impregnation is the most common way of introducing selective metals to catalysts, particularly on mesoporous supports (pore width 2-50 nm).…”

Section: Introductionmentioning

confidence: 99%

Impregnation Effect of Iron (Fe) and Cobalt (Co) on ZSM-5 Zeolite Catalyst from Rice Husk Ash and Coal Fly Ash for Methanol Synthesis

Fusia Mirda Yanti,

Arfiana,

SD. Sumbogo Murti

et al. 2023

Evergreen

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The methanol production process is a major issue due to the importance of methanol applications in transportation and other chemical industries. Selective catalysis of methane to methanol conversion using specific catalysts is one of numerous efficient methanol production processes now being developed by researchers worldwide. In the current study, we investigated the effectiveness of ZSM-5 zeolite-supported iron oxide and cobalt oxide as catalytic agents. The ZSM-5 zeolite employed (synthesized ZSM-5) was developed through a non-template approach by using ash from rice husk (RHA) and fly ash from coal (CFA). Wet impregnation method was used to impregnate the synthesized ZSM-5 with iron (Fe) and cobalt (Co), and a commercial ZSM-5 was likewise impregnated with Fe and Co for comparison. XRD, BET, and SEM-EDX ware used to examine the zeolite structure of the synthesized ZSM-5, and results discovered that the zeolite had been successfully created from rice husk ash and coal fly ash. The synthesized ZSM-5 samples were tested in a batch reactor for an hour at 423 K and 4 bars of initial methane pressure to accomplish methane to methanol conversion in an effort to quantify the catalytic activity. The results revealed that Fe impregnation of synthesized ZSM-5 zeolite had a greater effect on increasing methanol yield than Co impregnation.The catalytic performance test was impacted by Fe and Co impregnation in ZSM-5. This shows that the methanol yield of the synthesized ZSM-5 can be increased by Fe impregnation to 13.12% from 10.04% without it.

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Partial Oxidation of Methane to Methanol on Cobalt Oxide-Modified Hierarchical ZSM-5

Cited by 7 publications

References 28 publications

Study of Preventing the Alumina Dissolution and Metal Ion Migration in the Ceramic Membrane Divided-Electrochemical Cell Worked with High Acid-Base Electrolyte

Study of Preventing the Alumina Dissolution and Metal Ion Migration in the Ceramic Membrane Divided-Electrochemical Cell Worked with High Acid-Base Electrolyte

Dealumination Effect on ZSM-5 as a Bimetal Fe-Co Support for The Oxidative Desulfurization Process Catalyst

Impregnation Effect of Iron (Fe) and Cobalt (Co) on ZSM-5 Zeolite Catalyst from Rice Husk Ash and Coal Fly Ash for Methanol Synthesis

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