Question

QUESTION
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What is Aromatization ?
Explain in brief with examples.







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Harsh & Lavanya ​

Answer 1

Qᴜᴇsᴛɪᴏɴ :-

Wʜᴀᴛ ɪs Aʀᴏᴍᴀᴛɪᴢᴀᴛɪᴏɴ ?

Exᴘʟᴀɪɴ ɪɴ ʙʀɪᴇғ ᴡɪᴛʜ ᴇxᴀᴍᴘʟᴇs.

Aɴsᴡᴇʀ :-

Aʀᴏᴍᴀᴛɪᴢᴀᴛɪᴏɴ ɪs ᴀ ᴄʜᴇᴍɪᴄᴀʟ ʀᴇᴀᴄᴛɪᴏɴ ɪɴ ᴡʜɪᴄʜ ᴀɴ ᴀʀᴏᴍᴀᴛɪᴄ sʏsᴛᴇᴍ ɪs ғᴏʀᴍᴇᴅ ғʀᴏᴍ ᴀ sɪɴɢʟᴇ ɴᴏɴᴀʀᴏᴍᴀᴛɪᴄ ᴘʀᴇᴄᴜʀsᴏʀ. Tʏᴘɪᴄᴀʟʟʏ ᴀʀᴏᴍᴀᴛɪᴢᴀᴛɪᴏɴ ɪs ᴀᴄʜɪᴇᴠᴇᴅ ʙʏ ᴅᴇʜʏᴅʀᴏɢᴇɴᴀᴛɪᴏɴ ᴏғ ᴇxɪsᴛɪɴɢ ᴄʏᴄʟɪᴄ ᴄᴏᴍᴘᴏᴜɴᴅs, ɪʟʟᴜsᴛʀᴀᴛᴇᴅ ʙʏ ᴛʜᴇ ᴄᴏɴᴠᴇʀsɪᴏɴ ᴏғ ᴄʏᴄʟᴏʜᴇxᴀɴᴇ ɪɴᴛᴏ ʙᴇɴᴢᴇɴᴇ. Aʀᴏᴍᴀᴛɪᴢᴀᴛɪᴏɴ ɪɴᴄʟᴜᴅᴇs ᴛʜᴇ ғᴏʀᴍᴀᴛɪᴏɴ ᴏғ ʜᴇᴛᴇʀᴏᴄʏᴄʟɪᴄ sʏsᴛᴇᴍs.

Hᴏᴘᴇ ɪᴛ ʜᴇʟᴘs..

Mᴀʀᴋ ᴍᴇ ᴀs ʙʀᴀɪɴʟɪᴇsᴛ ❤❤

Answer 2

Aromatization is the conversion of a nonaromatic hydrocarbon

to an aromatic hydrocarbon.

Aromatization of saturated and unsaturated hydrocarbons has been the subject of extensive research in heterogeneous catalysis. This reaction proceeds rather easily from C2 compounds, but much more restrictedly from CH4. Recently, however, it was found that MoO3 deposited on ZSM-5 is an effective catalyst for the conversion of CH4 into benzene with high selectivity (70-85%) at about 10% of conversion [1-7]. More detailed studies showed that not the MoO3, but Mo2C, formed in the reaction between CH4 and MoO3, is the key compound which activates the CH4 molecules to produce hydrocarbon fragments, CH3, CH2, which dimerize into ethane and/or ethylene [4–7].These compounds may undergo aromatization on the acidic sites of ZSM-5. The conversion of ethylene into aromatics on a pure H-ZSM-5 is an important and well studied reaction [8-11].

In a previous work, we examined the aromatization of ethane on Mo2C/ZSM-5 catalyst [12]. In the present paper we report the influence of Mo2C on the reactions of ethylene on ZSM-5 and on SiO2.