本文關(guān)鍵詞：添加磷鎢酸的離子液體萃取催化氧化脫硫研究　出處：《化學(xué)研究與應(yīng)用》2017年03期 　論文類型：期刊論文

  更多相關(guān)文章： 磷鎢酸 正交試驗(yàn) 萃取催化氧化脫硫 動(dòng)力學(xué)

【摘要】：研究了以3-辛基-1-甲基咪唑四氟硼酸鹽離子液體(C_8mimBF_4)為萃取劑,磷鎢酸(H_3PW_(12)O_(40))為催化劑,質(zhì)量分?jǐn)?shù)為30%的過(guò)氧化氫(H_2O_2)為氧化劑,將模擬油中的特征硫化物苯并噻吩(BT)氧化成相應(yīng)砜類物質(zhì)的萃取催化氧化脫硫(ECODS)過(guò)程。通過(guò)正交試驗(yàn)確定其最佳反應(yīng)條件:反應(yīng)溫度40℃、氧硫摩爾比8:1、H_3PW_(12)O_(40)與硫摩爾比8:100、萃取劑與模擬油體積比1:10、反應(yīng)時(shí)間60min,在此條件下BT模擬油的脫硫率可達(dá)95.72%。同時(shí)在最佳反應(yīng)條件下考察了該ECODS體系對(duì)其他類型硫化物為底物的模擬油的脫硫性能,實(shí)驗(yàn)結(jié)果表明幾乎可以完全除去二苯并噻吩(DBT)和4,6-二甲基二苯并噻吩(4,6-DMDBT)。由正交試驗(yàn)極差可知,各因素對(duì)BT模擬油ECODS影響的優(yōu)先順序?yàn)?催化劑用量反應(yīng)時(shí)間反應(yīng)溫度氧硫摩爾比劑油比。動(dòng)力學(xué)實(shí)驗(yàn)結(jié)果表明BT氧化符合擬一級(jí)動(dòng)力學(xué)模型,并計(jì)算了反應(yīng)速率常數(shù)和半衰期。
[Abstract]:Using 3-octyl -1-methylimidazolium tetrafluoroborate ionic liquid C _ S _ 8mimBF _ 4) as extractant, and phosphotungstic acid H3PWW _ 3W _ (12) O _ (40) as catalyst. Hydrogen peroxide with a mass fraction of 30% H _ 2O _ 2) is used as oxidant. Oxidation of characteristic Sulfide benzothiophene in simulated Oil to corresponding sulfone by extraction Catalytic Oxidation of Desulfurization and Desulfurization (ECODS). The optimum reaction conditions were determined by orthogonal test: reaction temperature was 40 鈩，

本文編號(hào)：1411341