Managing radiation degradation of CCDs on the Chandra X-ray Observatory II
2005
A process for converting an oxygenate feed to high purity olefins such as polymer-grade propylene (C30/C3==0.05) at a temperature of about 450 DEG C. (842 DEG F.), using a molecular sieve catalyst having a high preselected Si/Al2 ratio (such as ZSM-5, ZSM-48) or a preselected Si/Fe2 ratio (such as FeZSM-5), or SAPO-34.
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