CAJ | 학술논문

采用浸渍法制备不同 TiO2含量的 Ag / TiO2- Al2 O3吸附剂，以含硫量为245.36 mg·L -1的商品柴油作为考察对象，常温、常压条件下采用静态评价进行吸附脱硫性能研究。结果表明，经过TiO2改性的 Ag / Al2 O3吸附剂柴油吸附脱硫活性有较大幅度提高。通过 X 射线衍射、N2物理吸附、O2化学吸附和 NH3程序升温脱附等研究 TiO2改性剂的影响。关联活性测试和表征结果发现，吸附剂的吸附脱硫活性受吸附剂比表面积、活性金属 Ag 分散度和吸附剂表面酸协同影响。吸附剂比表面积越大，活性金属 Ag 分散度越高，吸附剂表面弱酸性位点数量越多，强酸性位点数量越少，吸附剂吸附脱硫活性越高。2% Ag /4% TiO2- Al2 O3的吸附脱硫活性最高，饱和硫容达2.11 mg·g -1。
채용침지법제비불동 TiO2함량적 Ag / TiO2- Al2 O3흡부제，이함류량위245.36 mg·L -1적상품시유작위고찰대상，상온、상압조건하채용정태평개진행흡부탈류성능연구。결과표명，경과TiO2개성적 Ag / Al2 O3흡부제시유흡부탈류활성유교대폭도제고。통과 X 사선연사、N2물리흡부、O2화학흡부화 NH3정서승온탈부등연구 TiO2개성제적영향。관련활성측시화표정결과발현，흡부제적흡부탈류활성수흡부제비표면적、활성금속 Ag 분산도화흡부제표면산협동영향。흡부제비표면적월대，활성금속 Ag 분산도월고，흡부제표면약산성위점수량월다，강산성위점수량월소，흡부제흡부탈류활성월고。2% Ag /4% TiO2- Al2 O3적흡부탈류활성최고，포화류용체2.11 mg·g -1。
Ag / TiO2-Al2 O3 adsorbents with different contents of TiO2 were prepared by impregnation method. The static adsorption tests were carried oUt by contacting adsorbents with commercial diesel containing 245. 36 mg·L - 1 sUlfUr Under ambient conditions to investigate the adsorption desUlfUrization activity. The resUlts showed that Ag / Al2 O3 adsorbents modified with TiO2 exhibited higher adsorption desUlfUrization activity. The effects of TiO2 were stUdied by X-ray diffraction,N2-physisorption,O2-chemi-sorption and NH3 temperatUre-programmed desorption techniqUes. Correlating the characterizations with the resUlts of desUlfUrization activity,it was foUnd that the sUrface area of the adsorbent,the dispersion of the active metal Ag and the amoUnts of acid sites had the synergistic effects on the adsorption desUlfUriza-tion activity;the larger the sUrface area of the adsorbent,the higher the dispersion of the active metal Ag, the more the weak acid sites and the less the strong acid sites,which resUlted in higher adsorption desUl-fUrization activity. 2% Ag / 4% TiO2-Al2 O3 adsorbent with the satUration sUlfUr capacity of 2. 11 mg·g - 1 possessed the best desUlfUrization activity.