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The interaction of HNCO with Pd(100) has been studied with reflection absorption infrared spectroscopy. Following the adsorption of HNCO at 100 K, a fraction of the adsorbed HNCO desorbs at 115-125 K and another part dissociates at 120-140 K yielding adsorbed H and NCO species. NCO locates in top-site position having significant lateral repulsive interaction between them. On clean surface, the NCO species was found to decompose readily to adsorbed CO and N on warming to 300 K. Preadsorbed oxygen atoms resulted in the significant stabilization of NCO; the asymmetric stretch of it was detected up to 380 K. Neither NCO nor HNCO were identified in the NO + CO reaction even at high pressure (1-10 mbar) and at elevated temperature (500-650 K). The presence of hydrogen did not help the formation of this species.

In this work, the effect of oil heat treatment (OHT) on the swelling properties and changes in the rate of moisture uptake of poplar wood (Populus × euramericana cv. Pannónia) were investigated. Eighteen different treatments (combinations of three vegetable oils, two temperatures, and three durations) were studied. The results showed that OHT decreases the equilibrium moisture content (EMC) and the swelling of poplar wood. The degree of swelling and the EMC are influenced by both the duration and temperature of treatment. With an increase in duration and temperature, the EMC decreased. Consequently, the anti-swelling efficiency (ASE) increased. OHT wood adsorbs less moisture than natural wood, but it reaches a maximum -EMC at the momentary climate -at the same time under all the investigated treatments. The moisture uptake is fastest in the beginning and thereafter it slows significantly. Decreasing the moisture uptake by OHT wood is due to the decreasing of its water storage capacity.

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Dry thermal treatments of wood samples were carried out at 160 and 200 °C. After each treatment, the samples were irradiated using a strong UV emitter mercury lamp, and the colour change was then evaluated. For control, untreated samples were also irradiated using the same mercury lamp. Results showed that the extractive content of the wood played an important role in the colour change not only during thermal treatment but also during light irradiation. It was found that, compared to the thermally untreated samples, the thermal treatment at 200 °C reduced the red colour change due to photodegradation. The yellow colour change of photodegradation was hardly affected by the applied thermal treatments, showing that thermal treatments were not able to reduce the light degradation of lignin. The applied treatments slightly stabilized the wood against the degrading effect of light. The wood treated at lower temperature (160 °C) had less colour change induced by the light source.