發(fā)布時間：2018-04-16 12:28

  本文選題：SAPO- + 丁烯��； 參考：《分子催化》2017年01期

【摘要】：我們合成了不同Si含量的SAPO-18,并且利用了XRD、SEM、NH_3-TPD進行了表征分析.利用微反固定床反應(yīng)器評價了代表不同結(jié)構(gòu)的H-ZSM-5(MFI)、H-Beta(*BEA)、SAPO-18(AEI)系列分子篩的丁烯催化裂解性能.實驗結(jié)果表明分子篩的結(jié)構(gòu)和酸性對反應(yīng)結(jié)果都有明顯影響,分子篩酸量的增加提高了1-丁烯的轉(zhuǎn)化率,但酸量過高會引發(fā)氫轉(zhuǎn)移、芳構(gòu)化副反應(yīng),從而降低丙烯的選擇性;分子篩孔口大小、孔道結(jié)構(gòu)決定了可以獲得的最高丙烯選擇性.具有八元環(huán)孔口、籠形結(jié)構(gòu)特點的SAPO-18-0.8在線時間20 min時1-丁烯裂解中轉(zhuǎn)化率為60.7%,獲得的丙烯選擇性達到59.1%.
[Abstract]:We synthesized different Si content of SAPO-18, and the use of XRD, SEM, NH_3-TPD were characterized and analyzed. Using the micro fixed bed reactor was evaluated on behalf of different structures of H-ZSM-5 (MFI), H-Beta (*BEA), SAPO-18 (AEI) catalytic cracking performance of molecular sieve. The experimental results show that the structure of molecular sieve and acidity have significant effect on the reaction results, the molecular sieve was the increase of conversion rate of 1- butene, but the acidity can be caused by a high hydrogen transfer, aromatization reaction, thereby reducing the selectivity of propylene; molecular sieve hole size, the highest pore structure determines the selectivity of propylene can be obtained. With eight yuan orifice ring, cage structure characteristics of SAPO-18-0.8 online time 20 min 1- butene cracking in the conversion rate was 60.7%, the selectivity of propylene reached 59.1%.

【作者單位】： 東北石油大學(xué)化學(xué)化工學(xué)院;克拉瑪依職業(yè)技術(shù)學(xué)院;大慶應(yīng)用技術(shù)研究院;
【基金】：PetroChina Innovation Foundation,China(Grant No.2012D-5006-0403) PetroChina Technology Development(2014A-2610)
【分類號】：O643.36

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