化学工程2011，Vol.39Issue(8)：95-98,4.
铑-铱双金属催化甲醇制醋酸工艺
Rh-Ir bimetallic catalyst for methanol carbonylation to acetic acid
摘要
Abstract
By using the platinum group metals rhodium and indium as main component and α-Al2O3 as carrier to make bimetallic heterogeneous catalyst, the optimal catalyst preparation conditions and the catalytic effect were investigated. The rhodium nitrate and indium nitrate were used as catalyst precursor. Rhodium was impregnated and calcinated firstly, and then indium. A group of catalysts with different Rh and Ir mass fractions were prepared. The mass fraction of the metals in catalyst support was characterized by ICP-AES method. The experimental results show that Rh-Ir bimetallic heterogeneous catalyst with high activity and stability can be prepared when the mass fraction of Rh and Ir is 0.5% and 0.3% , respectively, calcination temperature is 450 ℃ for Rh and 550℃ for Ir, and calcinations time is 2 h. The new bimetallic catalysts were investigated in an autoclave to produce acetic acid. The space-time yield of acetic acid (STY) is near 18 mol/(L ? H), the methanol conversion is 60.1% and the selectivity of acetic acid is 99.2 % under the optimum reaction conditions of reaction temperature 180℃, reaction pressure 4.0 Mpa, reaction time 30 min, n(MeOH) :n(AcOH) :n(MeOAC) :n(MeI) =1:1:0.3:0.2, total volume 200 mL.关键词
醋酸/非均相催化剂/甲醇/铑/铱Key words
acetic acid/ heterogeneous catalyst/ methanol/ rhodium/ indium分类
化学化工引用本文复制引用
张蕾,唐应吉,杨燕红,马晓迅..铑-铱双金属催化甲醇制醋酸工艺[J].化学工程,2011,39(8):95-98,4.基金项目
陕西省“13115”科技创新工程(2009ZKC04-06) （2009ZKC04-06）
陕西省洁净煤转化工程技术研究中心(2008ZDGC-13) （2008ZDGC-13）
西北大学研究生创新基金(09YZZ52) （09YZZ52）
陕西省甲醇衍生物及聚合物工程研究中心 （）
