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UOP的MTO催化剂SAPO一爿在使用中需再烧焦。文章报导了S～—34粉加速水热老化以了解多次反应——再生循环后的结构变化的结果。在450℃水热老化或205次循环后未见S～一爿降解。650℃的水热条件下有部分SAPO—34垮成密相磷酸铝结晶的氧化硅。纯粉及喷雾干燥的催化剂情形相似。这
UOP’s MTO Catalyst SAPO must be re-burned in service. The paper reports the results of S ~ -34 powder accelerated hydrothermal aging to understand the structural changes after multiple reaction-regeneration cycles. After 450 ℃ water or heat aging or 205 cycles no S ~ a 爿 degradation. Under the hydrothermal condition of 650 ° C, some SAPO-34 breeds into dense phase aluminum phosphate crystallized silica. Pure powder and spray-dried catalysts are similar. This