新型丙烯醛和丙烯酸催化剂单管工艺试验研究

在模拟工业生产装置上，研究了新型丙烯（C3^=）氧化制丙烯醛（ACR）、ACR氧化制丙烯酸（AA）催化剂的性能，确定了催化剂的操作条件，并在此条件下进行了催化剂稳定性考察。结果表明：C3^=氧化制ACR在空速800－1000h^-1，盐浴温度310℃，C3^=、空气、水的体积比为10：73：17时，C3^=转化率高于98％，ACR收率高于81％，ACR＋AA总收率高于92％，COx收率低于4％；ACR氧化制AA在空速为1420h^-1，盐浴温度为258℃时，ACR转化率高于98％，COx收率低于3％。催化剂运行1000h后的性能良好。

One- pipe test of new type catalysts for acrolein and acrylic acid

Two types of catalyst performance of the process to oxidize propylene to acrolein and followed to acrylic acid were investigated in a pilot plant. The optional operating conditions for the two catalysts were determinated respectively, the stability of the catalysts were examined. The results indicated that conversion of propylene was 98 %, yield of acrolein was 81%, total acrolein and yield of acrylic acid was 92 %,yield of CO + CO2 was 4 % under the space velocity of 800～1 000 h-1 for propylene oxidized to acrolein,salt bath temperature of 310 ℃, propylene/air/water= 10/73/17(vol ratio). For acrolein oxidized to acrylic acid under the space velocity of 1 420 h-1, salt bath temperature of 258 ℃, conversion of acrolein was 98 %, yield of COx was 3 % and catalysts steady operation time was 1 000 h.