Direct Convertion Of Methane To Liquid Hydrocarbons Using HZSM-5 Zeolite Catalyst Loaded With Metal

Methane is the main component of natural gas and this research provides the platrorm on the potential of utilizing natural gas, found abundant in Indonesia, to form gasoline. The objectives of the research are to modify HZSM-5 zeolite with a series of transition metals (Cr, Mn, Co, Ni, Cu, and Pt) and Ga , and to evaluate the performances of these catalyst for the single step conversion of methane to gasoline. The oxidation of methane were carried out in a micro-packed bed reactor at atmoepheric pressure, temperature 800 0C, F/W = 10440 ml/g.hr and 9%vol O2. Metals were loaded into the HZSM-5 zeolite by the wetness incipient impregnation method. The characterization results indicated that the ionic metals (Mn+) occupy the H+ position of HZSM-5 and metal loaded HZSM-5. Ni- HZSM-5, Cu- HZSM-5 and Ga- HZSM-5 gave a high methane conversion and high gasoline selectivity. Among the catalyst samles tested, Cr- HZSM-5 showed the highest Research Octane Number (RON=86). These catalyst have the potential to convert natural gas to C5+ liquid hydrocarbons provided the oxidation, dehydration and oligomerization function of the metals are in balance.Keywords : direct conversion, methane, liquid hydrocarbons, metal, HZSM-5

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Selective Oxidation of Methane to Methanol on Dispersed Copper on Alumina from Readily Available Copper(II) Formate

Catalysis Science & Technology ◽

10.1039/d1cy00789k ◽

2021 ◽

Author(s):

Jordan Meyet ◽

Sander van Bavel ◽

Andrew Horton ◽

Jeroen van Bokhoven ◽

Christophe Coperet

Keyword(s):

Natural Gas ◽

Selective Oxidation ◽

Low Cost ◽

Direct Conversion ◽

Oxidation Of Methane ◽

Conversion Of Methane

The direct conversion of methane to methanol attracts increasing interest due to the availability of low-cost methane from natural gas. Significant steps in that direction have already been achieved, using...

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Methane Conversion to Liquid Hydrocarbons over W-ZSM-5 and W Loaded Cu/HZSM-5

ASEAN Journal of Chemical Engineering ◽

10.22146/ajche.50141 ◽

2006 ◽

Vol 6 (2) ◽

pp. 58 ◽

Cited By ~ 1

Author(s):

Didi Dwi Anggoro ◽

Nor Aishah Saidina Amin

Keyword(s):

Methane Conversion ◽

Principal Component ◽

Acid Catalyst ◽

Liquid Hydrocarbon ◽

Direct Conversion ◽

Catalytic Performance ◽

Liquid Hydrocarbons ◽

Oxidation Of Methane ◽

Highly Active ◽

To Come

The direct conversion of natural gas-in particular, its principal component, methane into useful products has been the subject of intense study over the past decades. However, commercialization of this process is still not viable because its conversion and selectivity potentials remain low. Thus, the search continues to come up with a suitable catalyst that allows methane to be oxidized in a controlled environment to yield a high percentage of higher hydrocarbons. ZSM-5 zeolite has been known to be a suitable catalyst for olefin oligomerization. Previous studies, however, have indicated that ZSM-5 zeolites are not resistant to high temperatures. In this work, ZSM-5 was modified with copper and tungsten to develop a highly active and heat-resistant bifunctional oxidative acid catalyst. The oxidation of methane was performed over W/Cu/HZSM-5 catalyst and the results compared with the catalytic performance of W/ HZSM-5 and HZSM-5 catalysts. The metal oxide on the catalyst surface led to enhanced conversion of Hz and CO to CZ-3 ydrocarbons and, hence, reduced HzO selectivity. Inh the liquid hydrocarbons, Cs+ selectivity increased with increasing amount of surface Bn1Jnstedacid sites. The experimental results indicated higher methane conversion and liquid hydrocarbon selectivity than that of W/3.0Cu/HZSM-5 catalyst.

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Selective Methanol Formation via CO-Assisted Direct Partial Oxidation of Methane over Copper Containing CHA-type Zeolites Prepared by One-pot Synthesis

Green Chemistry ◽

10.1039/d0gc03645e ◽

2021 ◽

Author(s):

Sibel Sogukkanli ◽

Takahiko Moteki ◽

Masaru Ogura

Keyword(s):

Partial Oxidation ◽

Direct Conversion ◽

Partial Oxidation Of Methane ◽

One Pot ◽

One Pot Synthesis ◽

Oxidation Of Methane ◽

Methanol Formation ◽

Conversion Of Methane ◽

Direct Partial Oxidation

Catalytic CO-assisted direct conversion of methane into methanol was demonstrated over Cu-CHA zeolites. Methanol was selectively produced as a solo oxygenate product. The results suggested the necessity of low copper...

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Assessment of the current state of research and achievements in the field of catalytic processing of natural gas into valuable chemical products

Kataliz v promyshlennosti ◽

10.18412/1816-0387-2021-4-197-217 ◽

2021 ◽

Vol 21 (4) ◽

pp. 197-217

Author(s):

A. A. Stepanov ◽

L. L. Korobitsyna ◽

A. V. Vosmerikov

Keyword(s):

Natural Gas ◽

Methane Conversion ◽

Direct Conversion ◽

Active Centers ◽

Current State ◽

Methane Dehydroaromatization ◽

Catalytic Processing ◽

Chemical Products ◽

State Of Research ◽

Main Component

The review examines the current state of the catalytic conversion of natural gas into valuable chemical products and fuel. The main component of natural gas is methane. Methane conversion processes are of great importance for society because natural gas, along with oil, supplies us with energy, fuel and chemical products. Direct and indirect methods of methane conversion are considered. Direct conversion of methane is often viewed as the holy grail of modern research, since methane molecules are very stable. The review considers the methods of obtaining such compounds as synthesis gas, methanol, ethylene, formaldehyde, benzene, etc. The greatest emphasis is placed on the direct processes of methane conversion, namely on the dehydroaromatization of methane. The catalysts and the conditions for their preparation are considered, the state of active centers is studied, and the mechanism of methane dehydroaromatization is proposed. The reasons for deactivation of the catalysts and methods of their regeneration are also described. This review will help to summarize the latest known achievements in the field of heterogeneous catalysis for natural gas processing.

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Characterization of Modified HZSM–5 with Gallium and its Reactivity in Direct Conversion of Methane to Liquid Hydrocarbons

Jurnal Teknologi ◽

10.11113/jt.v35.617 ◽

2012 ◽

Author(s):

Nor Aishah Saidina Amin ◽

Asmadi Ali

Keyword(s):

Catalytic Activity ◽

Ion Exchange ◽

Zeolite Catalyst ◽

Nitrogen Adsorption ◽

Direct Conversion ◽

Liquid Hydrocarbons ◽

Exchange Method ◽

Conversion Of Methane ◽

Ion Exchange Method

Mangkin zeolit HZSM–5 diubahsuai secara kaedah pertukaran ion berasid bagi menghasilkan mangkin zeolit Ga–HZSM–5. Aktiviti bermangkin bagi HZSM–5 dan Ga–HZSM–5 dikaji pada suhu tindak balas 800°C dan halaju ruang jaman masa (GHSV) 7500 jam–1. Mangkin HZSM–5 dan Ga–HZSM–5 dicirikan secara XRD, NMR, Penjerapan Nitrogen dan TPD. Hasil pencirian menunjukkan aluminium keluar dari kerangka asal. HZSM–5 yang mengandungi galium adalah mangkin yang lebih baik daripada mangkin zeolit HZSM–5 bagi menghasilkan cecair hidrokarbon. Kata kunci: Ga-HZSM-5; metana; pertukaran ion berasid; cecair hidrokarbon The HZSM–5 zeolite catalyst was modified by an acidic ion exchange method to produce the Ga–HZSM–5 zeolite catalyst. The catalytic activity of HZSM–5 and Ga–HZSM–5 were studied at reaction temperature of 800°C and gas hourly space velocities (GHSV) of 7500 hr–1. HZSM–5 and Ga–HZSM–5 catalysts were characterized by XRD, NMR, Nitrogen Adsorption and TPD. The characterization results revealed that aluminium was removed from the parent framework. Gallium loaded HZSM–5 is a better catalyst than HZSM–5 zeolite catalyst to produce liquid hydrocarbons. Key words: Ga-HZSM-5; methane; acidic ion exchange; liquid hydrocarbons

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