| http://www.w3.org/ns/prov#value | - Examples of such treatments are: deposition of coke or organic compounds, such as pyridine or other carbonaceous material, at the exterior or interior of the zeolite pores, deposition of silica or silicon compounds via treatment with SiCl4 or Si(OR)4 followed by calcination, treatment with phosphorus compounds, incorporation of metal salts or oxides, such as of Mg, Mo, W, Sb, or other oxides such
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