化学工程师
化學工程師
화학공정사
CHEMICAL ENGINEER
2014年
10期
17-21,46
,共6页
磁性钛硅分子筛%环己酮%氨肟化%传递-反应%动力学方程
磁性鈦硅分子篩%環己酮%氨肟化%傳遞-反應%動力學方程
자성태규분자사%배기동%안우화%전체-반응%동역학방정
magnetic titanium silicalite molecular sieve%cyclohexanone%ammoximation%transfer-reaction%ki-netics equation
磁性钛硅分子筛是具有原子经济特征和磁回收功能新型绿色催化剂。通过研究磁性钛硅分子筛催化环己酮氨肟化制备环己酮肟过程，考察了环己酮、H2O2和NH3·H2O的初始浓度和搅拌雷诺数对氨肟化过程的影响。在消除内扩散和外扩散的条件下，确定了环己酮氨肟化的动力学方程，反应指前因子为5.89×1012（mol-0.87·L0.87）·min-1，反应活化能为101.3kJ·mol-1，环己酮、H2O2和NH3·H2O的反应级数分别为0.65、0.16和1.06，对反应速率计算值和实验值进行了比较，平均相对误差为6.86%。
磁性鈦硅分子篩是具有原子經濟特徵和磁迴收功能新型綠色催化劑。通過研究磁性鈦硅分子篩催化環己酮氨肟化製備環己酮肟過程，攷察瞭環己酮、H2O2和NH3·H2O的初始濃度和攪拌雷諾數對氨肟化過程的影響。在消除內擴散和外擴散的條件下，確定瞭環己酮氨肟化的動力學方程，反應指前因子為5.89×1012（mol-0.87·L0.87）·min-1，反應活化能為101.3kJ·mol-1，環己酮、H2O2和NH3·H2O的反應級數分彆為0.65、0.16和1.06，對反應速率計算值和實驗值進行瞭比較，平均相對誤差為6.86%。
자성태규분자사시구유원자경제특정화자회수공능신형록색최화제。통과연구자성태규분자사최화배기동안우화제비배기동우과정，고찰료배기동、H2O2화NH3·H2O적초시농도화교반뢰낙수대안우화과정적영향。재소제내확산화외확산적조건하，학정료배기동안우화적동역학방정，반응지전인자위5.89×1012（mol-0.87·L0.87）·min-1，반응활화능위101.3kJ·mol-1，배기동、H2O2화NH3·H2O적반응급수분별위0.65、0.16화1.06，대반응속솔계산치화실험치진행료비교，평균상대오차위6.86%。
Magnetic titanium silicalite has been known as a new type catalyst with atom-economic character-istics and magnetic seperation function. Ammoximation of cyclohexanone was catalyzed by magnetic titanium sili-calite molecular sieve, the influences of various operating parameters, including cyclohexanone concentration, hy-drogen peroxide concentration, aqueous ammonia concentration and stirring reynolds numbers etc, on the ammoxi-mation processes were investigated. On the premise of eliminating of the effects of internal and external diffusion on the ammoximation reaction, the per-exponential factor is determined as 5.895×1012(mol-0.87·L0.87)·min-1, the re-action activation energy is 101.362kJ·mol-1, and the orders of the reaction are 0.65、0.16 and 1.06 respect to cy-clohexanone,H2O2 and NH3 respectively. The kinetic equation was confirmed to be reasonable after comparing the calculated and experimental data for the average relative error is 6.86%.
