Synthesis and Characterization of Novel Corncob-Based Solid Acid Catalyst for Biodiesel Production,Industrial & Engineering Chemistry Research

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Synthesis and Characterization of Novel Corncob-Based Solid Acid Catalyst for Biodiesel Production
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-08-15 , DOI: 10.1021/acs.iecr.8b02464
Zakir Hussain ₁ , Rakesh Kumar ₁

Affiliation

In the present study, highly efficient catalysts based on corncob were synthesized for the esterification process. The synthesized catalysts were characterized by BET, XRD, and FT-IR. The effect of catalyst impregnation, carbonation, and sulfonation was studied in detail. The highest conversion of oleic acid (∼94.4%) was observed using a catalyst synthesized at H₃PO₄ impregnation ratio = 1 and time = 5 h; carbonization temperature = 723 K and time = 8 h; sulfonation temperature = 393 K and time = 15 h. Further, the performance of the catalyst was studied for the esterification of fatty acids (FAs) and free fatty acids (FFAs) present in Karanja oil. The catalyst showed ∼90% conversion of FAs/FFAs within 2 h at 338 K using a molar ratio of 1:10 (FA to methanol)/1:20 (Karanja oil to methanol) and a catalyst loading of 10 wt %. Furthermore, the reusability test of the catalyst revealed that it can be used for 20 times in a batch reactor to give ∼90% conversion of the oleic acid.

中文翻译：

用于生物柴油生产的新型玉米芯基固体酸催化剂的合成与表征

在本研究中，合成了基于玉米芯的高效催化剂用于酯化过程。通过BET，XRD和FT-IR对合成的催化剂进行了表征。详细研究了催化剂浸渍，碳酸化和磺化的影响。使用在H ₃ PO _4上合成的催化剂观察到最高的油酸转化率（〜94.4％）浸渍比= 1且时间= 5 h；碳化温度＝ 723K，时间＝ 8h；磺化温度= 393 K，时间= 15 h。此外，还研究了催化剂对Karanja油中存在的脂肪酸（FAs）和游离脂肪酸（FFA）进行酯化的性能。催化剂在338 K下2小时内，FAs / FFA的转化率约为90％，使用的摩尔比为1:10（FA与甲醇）/ 1：20（Karanja油与甲醇），催化剂负载量为10 wt％。此外，催化剂的可重复使用性测试表明，该催化剂可在间歇式反应器中使用20次，以产生约90％的油酸转化率。

更新日期：2018-08-16

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