摘要
菌株Ｒ０８（Ｂａｃｉｌｌｕｓ）具有强吸附还原Ｐｄ２＋ 的能力． 用Ｒ０８ 将Ｐｄ２＋ ／γ－ Ａｌ２Ｏ３ 表面的Ｐｄ２＋ 完全还原为Ｐｄ０，制成高分散度的Ｐｄ０／γ－ Ａｌ２Ｏ３ 催化剂． 该催化剂对ＣＯ催化转化为ＣＯ２ 表现出高的活性，在１５０ ℃，通ＣＯ（２％ ）空气混合气、ＧＨＳＶ ３０ ０００ ｍ Ｌ·ｇ－ １·ｈ－ １的条件下，ＣＯ转化率１００％ ；而且已测单程寿命为８０ ｈ．
Strain R08 (Bacillus SP.) has strong adsorbability to Pd 2+ and can reduce Pd 2+ to Pd 0. The results of XPS measurement showed that Pd 2+ ions supported onγ Al 2O 3 were reduced to Pd 0 particles by strain R08. The precursor of Pd 0/γ Al 2O 3 catalyst was prepared by biochemical reduction method. This precursor can be used to prepare Pd 0/γ Al 2O 3 catalyst with high dispersion.The result of actvity assay indicated that the catalyst had high catalytic activity for the oxidation of carbon monoxide, with CO conversion reaching 100% at 150℃ and GHSV 30 000mL·h -1 ·g -1 . and high stability during 80h of reaction operation.
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
2000年第1期67-71,共5页
Journal of Xiamen University：Natural Science
基金
国家自然科学基金!(2974301
29876026)
固体表面物理化学国家重点实验室基金!(9611)
