文件类型:PDF文档
文件大小:1113K
A metal trap for an FCC catalyst include pre-formed microspheres impregnated with a salt of calcium and/or magnesium and an organic acid salt of a rare earth element.
0下载243浏览274K
0下载232浏览220K
0下载108浏览920K
0下载418浏览624K
0下载409浏览767K
0下载143浏览298K
0下载325浏览586K
0下载210浏览345K