Like others, curious about exactly what you're trying to do - and if this is a helpful way to go.
Putting that aside, there's a program called PatchTool made by BabelColor that can import a CXF file and export it to a TIFF image.
If you'd like to send me the CXF file, I can send you back a TIFF. To transfer spectral measurements in CXF to a TIFF image, I'd need to know: the RGB profile and rendering intent you'd like to be used in the rendering spectral measurements to RGB values process (ProPhoto RGB and absolute colorimetric perhaps? Maybe LAB?); the illumination light you'd like to simulate (D50 perhaps?); the pixel width, height, and resolution of *each* patch, and if a 16-bit depth is OK or if you preferred 8-bit depth.