天然气化工
天然氣化工
천연기화공
NATURAL GAS CHEMICAL INDUSTRY
2014年
6期
5-8
,共4页
李科锋%王翠%温少波%邢普%程福龙%吴晓峰%赵亮富%张瑞珍
李科鋒%王翠%溫少波%邢普%程福龍%吳曉峰%趙亮富%張瑞珍
리과봉%왕취%온소파%형보%정복룡%오효봉%조량부%장서진
液化气%芳构化%HZSM-5%γ-Al2O3%酸性
液化氣%芳構化%HZSM-5%γ-Al2O3%痠性
액화기%방구화%HZSM-5%γ-Al2O3%산성
LPG%aromatization%HZSM-5%γ-Al2O3%acidity
制备了系列HZSM-5与拟薄水铝石不同质量比的催化剂HZSM-5+γ-Al2O3，采用NH3-TPD和Py-IR对所制催化剂进行酸性表征，并考察其在液化气（LPG）芳构化反应中的催化活性。结果表明，加入γ-Al2O3可降低催化剂的总酸量、强酸量和强酸强度，同时B酸量也大幅降低。γ-Al2O3可能是促进了氢转移芳构化，且HZ+A(30%)催化剂由于具有合适的B酸和总酸量，使其有较高的芳烃收率。
製備瞭繫列HZSM-5與擬薄水鋁石不同質量比的催化劑HZSM-5+γ-Al2O3，採用NH3-TPD和Py-IR對所製催化劑進行痠性錶徵，併攷察其在液化氣（LPG）芳構化反應中的催化活性。結果錶明，加入γ-Al2O3可降低催化劑的總痠量、彊痠量和彊痠彊度，同時B痠量也大幅降低。γ-Al2O3可能是促進瞭氫轉移芳構化，且HZ+A(30%)催化劑由于具有閤適的B痠和總痠量，使其有較高的芳烴收率。
제비료계렬HZSM-5여의박수려석불동질량비적최화제HZSM-5+γ-Al2O3，채용NH3-TPD화Py-IR대소제최화제진행산성표정，병고찰기재액화기（LPG）방구화반응중적최화활성。결과표명，가입γ-Al2O3가강저최화제적총산량、강산량화강산강도，동시B산량야대폭강저。γ-Al2O3가능시촉진료경전이방구화，차HZ+A(30%)최화제유우구유합괄적B산화총산량，사기유교고적방경수솔。
HZSM-5+γ-Al2O3 consisting of different mass ratios of HZSM-5 zeolite to pseudo-boehmite binder were prepared and characterized by NH3-TPD and Py-IR, and their catalytic activities in LPG aromatization were investigated. The results showed that the addition of γ-Al2O3 could reduce the amount, strength and percentage of the strong acid as well as the amounts of Brφnsted acid and total acid. It’s probable that γ-Al2O3 had promoted hydrogen transfer and aromatization, and the catalyst HZ+A (30%) had appropriate amount of Brφnsted acid and total acid that made it had a higher yield of aromatics than others.
