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„µ¦—¼—Ž´„pµŽÁ°š·¨¸œ—oª¥Ž¸Ã°Å¨˜r
The Adsorption Ethylene by Zeolite
œ¦·«¦µ »›´µª´´¥1 ¨³°»¬µ °oœš°Š2
Narisara Suthanyawatchai 1 and Usa Onthong2*
š‡´—¥n °
„µ¦—¼ —Ž´„pµŽÁ°š· ¨¸œ—o ª¥Ž¸Ã°Å¨˜r ›¦¦¤µ˜· Á¡ºÉ°«¹„¬µ„µ¦³¨°„µ¦» „ °Š„¨oª¥ ×¥‡Îµœª–„µ¦Á„·—
°´œ˜¦„· ¦·¥µ¦³®ªnµŠÁ°š·¨¸œ„´Ž¸Ã°Å¨˜r —oª¥Á‡¤¸‡°¤¡·ªÁ˜°¦r Ž¸Ã°Å¨˜r š¸ÉčoĜ„µ¦‡Îµœª–‡º ° H-ZSM-5 ¤¸œµ— 5T
¨³ 34T ¦³Á¸¥ª·›¸ š¸Éčo‡º° ONIOM (HF/6-31G (d,p):UFF) ¨³ ONIOM (B3LYP/6-31G (d,p):UFF) ‡nµ¡¨´ ŠŠµœ
„µ¦—¼—Ž´ Ášnµ„´ -6.67 ¨³ -13.17 „·Ã¨Â‡¨°¦¸É˜n°Ã¤¨ ˜µ¤¨Îµ—´ ¡ªn µÁ°š·¨¸œµ¤µ¦™Á„·—°´ œ˜¦„·¦·¥µÅ—oœ
ǦŠ¦oµŠ °Š Ž¸Ã°Å¨˜r œ·— H-ZSM-5 š´ÊŠ°Š œµ— (5T ¨³ 34T) ‹¹ŠÅ—ošÎµ„µ¦«¹„¬µ„µ¦Äo Ž¸Ã°Å¨˜r›¦¦¤µ˜·
—¼—Ž´„p µŽÁ°š·¨¸œš¸ÉÁ„· —‹µ„„¦³ªœ„µ¦»„ °Š„¨oª¥®°¤Á¡ºÉ°³¨°„µ¦» „ °Š„¨oª¥®°¤ ‹µ„Ÿ¨„µ¦š—¨°Š
—´Š„¨nµªšÎ µœµ¥Å—oªnµ„pµŽÁ°š·¨¸œš¸ÉÁ„·—‹µ„„¦³ªœ„µ¦»„ °Š„¨oª¥Á„·—ž’· „·¦·¥µÃ°¨·Ã„Á¤°Å¦ÁŽ´ œÃ—¥¤¸Ž¸Ã°Å¨˜r
›¦¦¤µ˜·Áž}œ˜´ªÁ¦nŠž’·„·¦·¥µ
‡ÎµÎµ‡´ : Á‡¤¸‡°¤¡·ªÁ˜°¦r Ž¸Ã°Å¨˜r Á°š· ¨¸œ „µ¦—¼ —Ž´
Abstracts
The adsorption of ethylene by natural zeolite to study the delay ripening of banana have been studied
using a 5T and 34T cluster of H-ZSM-5 zeolite and calculated at the ONIOM (HF/6-31G (d,p):UFF) and ONIOM
(B3LYP/6-31G (d,p):UFF) level the adsorption energy to be -6.67 and -13.17 kcal/mol respectively. The result for
studying was the interaction of ethylene on H-ZSM-5 zeolite and then have been experiment using natural zeolite
absorbs ethylene gas from ripening process of banana for delay the ripening of banana so predicting that the
ethylene gas from ripening process of banana was the ethylene oligomerization with catalyzed by natural zeolite.
Keywords: Computational chemistry, Zeolite, Ethylene, Adsorption
1œ· ·˜´–”·˜«¹„¬µ µ µÁ‡¤¸ ž¦³¥»„˜r ‡–³ª·š¥µ«µ˜¦r ¤®µª·š¥µ¨´¥š´„¬·– ¡´š¨»Š 93110
1Master’s Degree Student, Department of Chemistry, Faculty of Science, Thaksin University, Phatthalung, 93110
2Ÿ¼onª¥«µ˜¦µ‹µ¦¥r —¦. µ µÁ‡¤¸ ‡–³ª·š¥µ«µ˜¦r ¤®µª· š¥µ¨´¥š´„¬·– ¡´š¨»Š 93110
2Asst. Prof. Dr., Department of Chemistry, Faculty of Science, Thaksin University, Phatthalung, 93110
* Corresponding author : Telephone / fax 0-7444-3966 E-mail: usa@tsu.ac.th