【摘要】：以Beta分子篩為催化劑,系統(tǒng)考察了反應(yīng)條件和催化劑酸性變化對(duì)甲苯和三甲苯烷基轉(zhuǎn)移反應(yīng)催化性能的影響.實(shí)驗(yàn)結(jié)果表明,反應(yīng)條件、分子篩晶粒尺寸及其酸性對(duì)烷基轉(zhuǎn)移催化活性和穩(wěn)定性都具有顯著影響.研究發(fā)現(xiàn):當(dāng)反應(yīng)溫度為450℃、壓力為3 MPa以及反應(yīng)物甲苯和三甲苯物質(zhì)的量比為1時(shí),二甲苯收率達(dá)到最高;分子篩催化活性隨硅鋁比升高而降低;催化劑晶粒尺寸減小能夠顯著提高反應(yīng)穩(wěn)定性.同時(shí),還對(duì)甲苯和三甲苯烷基轉(zhuǎn)移反應(yīng)機(jī)理進(jìn)行了深入研究,推導(dǎo)出了可能的反應(yīng)機(jī)理路線圖.
[Abstract]:The effects of reaction conditions and catalyst acidity on the catalytic performance of toluene and trimethylbenzene alkyl transfer reaction were systematically investigated using Beta molecular sieve as catalyst. The experimental results show that the reaction conditions, grain size and acidity of molecular sieve have significant effects on the catalytic activity and stability of alkyl transfer. The results show that when the reaction temperature is 450 鈩，

本文編號(hào)：2140425